On OS X, what is pubsubagent and why does it connect so many places?

I use Little Snitch to monitor network connections on OS X, and I frequently see attempts by something called pubsubagent to connect to many varying sites. What is this program for and why does it use so many connections?

According to this article it's used by .me sync to synchronize RSS feeds and bookmarks. But I don't have any RSS feeds. And if it's synching bookmarks, then why is it going to places like 'l.google.com' (and many more random ones) instead of just to .me?

Solution 1:

Mail comes setup with several default RSS feeds. Delete them if you don't want them.

I believe you can also just whack the entire ~/Library/PubSub folder and get rid of everything that could possibly be using the PubSub framework.