I found XKCD yesterday through a story on the website of the NEW YORK TIMES! (yes, I know that's lame...)
I have read from the first to the 256th, without any ill effects. In fact, my A.D.D. and O.C.D. appreciate this strip...greatly...
However, I feel compelled (of course) to point out errors in "Online Communities"
http://www.xkcd.com/256/. Obviously Americentric, this map, while humorous, is deeply misleading. The largest online communities are in CHINA. The largest is QQ, which has over 341,900,000 active members (some 600,000,000 registered), certainly [red] dwarfing anything else on the map. Beyond that, there are others that are web-based (sina.com is the largest of those), followed by many others with strange numerical names: 51.com, 56.com, 163.com...(looking for patterns in the randomness?).
I have shown some of the webcomics to friends who speak English, and they seem fairly amused. Chinese would be a good language for your site. Hundreds of millions of hits waiting to be had...