I have seen few answers that are asking for upvotes and just wondering if that's something we welcome at SE.
Personally, I think these types of comments are just noise.
I would encourage people to resist the temptation to beg for votes. And appending "hope it helps" to your answer is as much use as questioners adding "please answer my question" or "thanks in advance" and the like. It just dilutes the valuable content.
By the way, if you find this answer useful PLEASE, PLEASE, PLEASE UPVOTE IT!!!!! I am desperate for reputation.
Hope that helps, etc.