The last two people who claimed t-shirts in my Big T-Shirt Giveaway found out about it from this site, where a sweepstakes enthusiast named "HASAMA" links to blog postings where bloggers are giving away stuff (sometimes in a contest, sometimes first-come first-serve like me).  And how did HASAMA know about me?  Diligent searching, I guess...

So go check it out and win something for yourself -- I haven't found anything I want yet, but I'm still looking....