Three questions in such a short space!
I bet your blog has been kicked off Google. Am I right?
Try Googling (yes, really; even though they kicked you out, the search engine works just fine) restoring a site removed from the Google index
And next time, don't use black hat SEO strategies, such as keyword-stuffing, which is how most sites are delisted in the first place.
As for what a Google bot is, keep reading that link I posted.