Emily at Insanity Rules posted about learning about blog giveaways and the laws that govern them. Did you know there were laws? I probably thought about it once, but then waved it away like a bothersome mosquito.
Anyway, she offered a link to an article, here, that you might be interested in reading if you want to delve into that murky and potentially blog-changing area. :)
And it might be worth some real, in-depth research as well, if you do giveaways regularly.
Just a thought!