Should I Continue To Inded?

Question for the smart people here. If I already have a website showing up on, let's say page 8 of google, that means it is indexed. What would the effect be if I ran it through another indexer i.e. power indexer pro, no hands indexer, etc.?

I know some of you may find this to be a stupid question, but I really don't know what happens, so please answer if you have an idea. Thanks so much.