I've been using NextGEN Gallery Voting for clients to they can choose images from their proofs. Once they've chosen, I take the picture titles and find the corresponding titles within my light room galleries.
Two features that I would like to see are:
1) View all results by gallery (similar to the "top votes" screen)
2) And a way to download these results to excel as a CSV or something....Image samples would not have to be included.
I suspect I'm not the only one using voting for a similar purpose.