Warning: Steam Users in the Geeknights Group
Quick reminder, if a "person" you've never heard of in the Geeknights group messages you and asks you to enter your username and password on a site that *looks* like the Steam Community homepage in exchange for a free game, DON'T DO IT.
I won't embarrass him/her by using his/her name, but another forum user fell for this trick and I figure it doesn't hurt to remind everyone to check the URL before you enter account information of any type anywhere.
Comments
Basically, except for emails to your actual email address, IMs to your normal IM address, twitterlikes, and links on web pages, you should never click on a link. Anyone sending you a link on, say, Steam, is going out-of-band, and it's a pretty safe and sane policy to ignore a link there.
Only process data that comes to you in a context you expect and in a form you expect for said context. Don't take a string when you normally only take integers: it means something is wrong with your input.