You can do just about anything without credits. They've just started this credits things to get more activity. I don't know how it applies to the rest of the site, only to the answers section. As far as I know, the only thing you really get from credits is the priviliege of asking or answering questions anonymously, "awards" for how many you answer or if you get good votes, and the simple satisfaction of having racked up mostly meaningly points. LOL! Have fun!
at 5:10 PM on Aug. 5, 2010