I made a number of early article enhancements before user IDs became important and I decided to get an ID. The few articles I specifically remember editing are vastly expanded and I have no idea exactly what text I contributed back when.
I have written one main article, which still needs a lot of work, I know. I haven't done much editing lately, mostly because most of my largest knowledge domains have been pretty much filled in by bigger geeks with more time, and nowadays I am usually visiting to fill in my knowledge gaps. I typographically edit articles as time and certainty permit, but I'm impressed with the thoroughness of the crowd.