Google deletes your data within I think 64 days if you request them to or delete your account.
"Well when talking about deleting we mean we do the exact same thing the file system does to a file, it flags it, but doesn't actually erase it's content. Acting like a filesystem delete operation is what people expect when using that word"
Not that I think that's legitimate! Implementations can be changed, just like you could write a filesystem that shreds files when they are deleted.