Great!  keep at it!

probably the first two weeks is toughest ...

Progress:
Using the same test as above:
After day 16: 39 wpm (172 cpm)

Using the 3 min enchanted typewriter test: 26 wpm (net) at 89% accuracy.

I still hit quite a few QWERTY keys when trying to write (too) fast... So I'm trying to improve my accuracy by redoing all the lessons at 30 or more wpm (for at least 10 minutes) at < 1% error rate. Have done this for lesson 1 to 7 so far... (others at least at 25wpm and < 2% error rate)

I've been away for the annual mandatory military refresher course for 3 weeks, without typing practice except for weekends. Other than that I've been using the Colemak layout at work and at home for everyday tasks, and not much typing lessons (The last I did was 10 minutes of typing at 35+ wpm for each of the 12 supplied lessons).

Progress: (Using the same test as above)
After day 20: 51 wpm (215 cpm)
After day 50: 67 wpm 289 cpm)

Today (64th day), I did the jphantom test exactly as fast and accurate as last time (previous post).

BTW, on the 54th day I did the enchanted typewriter test again, this time at 47 WPM at 94% accuracy. Still making progress, but much more slowly now - then again I haven't done any training for weeks. I'm confident that I'll reach my qwerty speed at some point though.

In the last two months a few things happened:

In december I got a TypeMatrix 2030 keyboard and tried it for over a week. Unfortunately, it wasn't for me. While I liked the grid-like layout of the keys as well as the center enter and backspace keys, I couldn't handle the placement of the modifier keys. Being a Mac user I do need all three of them (Command, Option and Control) regularly, and  - as I found out - on both sides of the space bar. It might have worked out if the key immediately to the left of the space bar could have been mapped to Command, but as it's one of the Shift keys, it couldn't be done without remapping the regular two shift keys.

Having liked the grid layout of the TypeMatrix I got a Plum Keyboard and remapped it to Colemak. Unfortunately, it was just too cheap and finicky (the keys have to be hit exactly in the middle, otherwise they won't move), so I dismissed it after a few hours.

At that time I bit the bullet and ordered next-best thing to "the real thing": a Kinesis Ergo Contoured Keyboard. I admit I've also been thinking about the real real thing, which would reportedly be a Maltron Keyboard. But it's twice as expensive as the Kinesis, and not re-mappable in Firmware, so I'm not so sure... I'd love to hear from anyone who's tried both.
I've been using the Kinesis keyboard for two weeks now and think it's a keeper. I'll probably order another one soon, since I'm taking the one I have from home to work and back home on weekends... I love the ability to remap keys in firmware and am still experimenting...

With all these new keyboards my Colemak speed has hardly improved. I did manage 62 wpm in Ryan Heise's typing test (link in signature) with the aluminum Apple keyboard recently, a speed which I'm only now approaching again with the Kinesis (60 wpm being the closest IIRC)

I did the enchanted typewriter test again on the Kinesis just now: 56 wpm at 98%.
(Remember that before the switch to Colemak I had 72 wpm at 97%)
I guess it will take at least a couple months till I reach the speed I had before, for now I'm happy with much more comfortable typing, thanks to the improved logical and now also physical keyboard layout. :)

And for the record today is day 196 after I switched to Colemak.

I'm not doing reviews, but I posted some more comments at https://forum.colemak.com/viewtopic.php?id=371

Also, as of today I'm just as fast with the Kinesis as I was with the Apple keyboard a week ago.

Day 308: It's been 3 months since my last progress report, so here goes...

I've not been doing any practice other than normal use of the computer (lots of it, as I'm a software engineer).

Today's score at Hi-Games is still 70 wpm. I did improve a tiny bit in the test I use as reference: The 3 minute "Enchanted typewriter" test at typingtest.com. I'm very close to my previous QWERTY speed now. I finally made a graph for the data I gathered. The left part is from normalized scores of the jphantom test, the right part is the reference test.

The x-axis is time since the switch in days, the y-axis is WPM.

Just to clarify, I'm no longer using QWERTY if I can avoid it (except on the iPhone), and for the few times I cannot avoid it I just hunt and peck.

Summary:
While I reached half of my QWERTY speed in 3 weeks, I haven't reached full QWERTY speed after 10 months.

Edit 2008-08-10: Updated graph.

Edit 2013-10-29: Fixed link to image.

Nice work there, Boli.

It just occurred to me that the keys that Colemak doesn't bother with changing are around the 1% frequency mark. So if you were to consider mistyping a "key" it's now at 3% with your very typical error rate. This means around 3% hitting the backspace key (luckily it's in a better position at least!) and in addition the lapse in concentration and the time your brain takes to decide on what to do before actually correcting the mistake and moving on. It adds up. I wish we had a good measure of how much time errors take compared to the rest - maybe Ryan Heise or someone else could make something? Let's say the time between a mistyping and the next correctly typed char was measured and at the end compared with the time a correct press took on average.

At any rate (pun intended!) I think that getting the error rate down from the usual 3%ish to around 1% would be very beneficial for most.

AWESOME RESULTS Boli!!

I broke the 70wpm plateau after drilling myself on that keybr.com test a few times per day for 5-10min sessions over a period of 5 days... It cut my error rate down to less than 1 mistake per minute! Going back and forth between accuracy and speed works wonders.

And I swear this other "method/trick" worked for me as well:

As you know, I was stuck at 60-65wpm for close to a month. One night, I finally got frustrated and just had to blow off some steam, so I decided to do some squats - 3 sets, REALLY heavy. My legs felt like noodles after the set, so I sat down at my desk, and decided to do a quick test, and I kid you not, I bested my highest score at the time (68wpm) by 6wpm. Not only that, my average tests after that point stayed in the low 70s. Crazy huh?

Too bad it doesn't work that way after every workout...:)

Actually, I think it was a combination of both the keybr practise and the "de-stressing" workout.

Progress as of day 357:

- 3 minute "enchanted typewriter" at typingtest.com: 72 wpm net speed, at accuracy of 98%. Finally, I reached my QWERTY speed – after almost a year. Yesterday I tested at 71 wpm five times, with varying accuracies - the worst was 94%, when I tried typing as fast as possible in a less focused/controlled manner (at 76 gross wpm, but still only 71 net wpm).
By now I can type the "Enchanted typewriter" almost by heart. ;)

I updated the graph in this earlier post.

- keybr.com: Average speed is 69 wpm, new top speed is 100 wpm (total of 320 exercises). The new top speed was reached only by using the digg.com web feed as input text. The default random texts contain strange words which are not quite English, which require a lot of focus/attention.

Wow, the total Colemak experience. Very inspiring.

Just did the same test again: 79 wpm (net/gross) at 99% accuracy.