Google requesters are ones that use a specific computer system in their HITs. Virals are a google requester. So are Burkes. So is John Smith. And so on and so forth. Google requesters (aside from smith) are generally good requesters and will approve your work. That being said, I personally despise what Vale has become. They posted a food batch a few months ago that was extremely awesome. Excellent pay rate. Ever since then though, they've posted nothing but crap hits that are good for nothing but numbers.
Nothing will. If you don't have them saved in hitDB or somewhere else, they're gone forever and nothing can bring them back. EDIT: Didn't read your nick lol, statement is more directed generally than at you.