I got spammed!

I guess I now know what it means to get spammed! I have never had an issue with spam until Wednesday this week when I received 2,333 returned/undeliverable e-mails. Whats up with that? I make my e-mail address every accessable on my site and blog because I hate when I'm on someones's site and I can't fiqure out how to contact them. I try to make it easy to reach me and so if I get spammed once in awhile for it, so be it.