Limiting privacy

There are times when I like to post some personal blogs, because I think my blogspot account is relatively private, where I can talk about more personal stuffs. However, when I googled my email (out of curiosity and boredom), it led to a comment I wrote on someone's blog, in which I had left my email in the comment (hence, it showed up in the search). I tried to outsmart google search by deleting the comment on that blog (sorry, Tanya). But to my surprise, the search results stayed the same. I guess all the geniuses working @ Google are too smart for me to outsmart them. :(