arXiv.org supports the Trackback standard. By sending a trackback, you can notify arXiv.org that you've created a web page that references a particular paper. You can view recent trackbacks.
If you would be interested I would be happy to submit pull-request that would be sending summary trackbacks to arxiv.
Arxiv supports trackback functionality:
If you would be interested I would be happy to submit pull-request that would be sending summary trackbacks to arxiv.