This site makes its content available by Atom feeds. If you don't know what a feed is, or why you'd care about one, start here.
There is the site's main feed, published at
/index.atom, if you
want to know about each and every new GIF published.
If you are more selective, every major source of GIF comes with a feed too, so you can subscribe to just that. Be it:
And every tag applied to a GIF comes with a feed, so you can subscribe to that subset too:
Look for the "feed" links in the source and tags pages, or in the footer across the site.