I found an interesting ruby util – chit. it can retrieve cheat sheets from repositories powered by git!
http://wiki.github.com/robin/chit/user-s-guide
so far I haven’t found any especially useful cheat sheets there. but it looks interesting and promising.
what’s the difference between a cheat sheet and a man page? man pages spend too much effort to define options formally. cheat sheets give you examples directly without any explanation. that’s why i prefer cheat sheets.
It is not news. NYTimes just published an article Who’s Driving Twitter’s Popularity? Not Teens.
http://www.nytimes.com/2009/08/26/technology/internet/26twitter.html?_r=1
some interesting points
“Though Twitter’s founders originally conceived of the site as a way to stay in touch with acquaintances, it turns out that it is better for broadcasting ideas or questions and answers to the outside world or for marketing a product.”
“The public nature of Twitter is particularly sensitive for the under-18 set, whether because they want to hide what they are doing from their parents.”
Let me add another figure of twitter demographics from comscore shared by cambodia4kidsorg on flickr.
sina will launch a twitter-like microblogging service. when chinese clone products, usually no detail will be missed. it even only allows 140 characters too. actually i hope yahoo can clone other products in this no-brainer way, since it turns out most features yahoo missed in the beginning will be eventually added anyway. it is more important to enter the market faster.