I've been doing this for about 6 years, started in my second year of Japanese study. Yves kindly let me post the doujinshi scanlations I'd been doing on /cm/ on her and her friends' Livejournal community and it just snowballed from there.
I've apparently done about 17gb worth of scanlating (35,500 individual files all told).
It's been fun, but I no longer have the time or desire to continue. If anyone wants what I've done of the incomplete projects to finish them off (there's more done than was in that post - out of sequence pages, half finished translations, etc), just give me a bell.
Thanks to the 8,747 members of Moy and the 20~40 of you who commented regularly.