If there's no such service you can think of, would anyone find such a site/service useful? As in, "You upvoted 'Aligning Books and Movies: Towards Story-like Visual Explanations by Watching Movies and Reading Books'[1], you might also be interested in 'What's Cookin'? Interpreting Cooking Videos using Text, Speech and Vision'[2] " kind of thing?
1. http://arxiv.org/abs/1506.06724 2. http://arxiv.org/abs/1503.01558