Posting to Facebook: Use a service or DIY via the Open Graph API?
For a very long time, for my simple Catholic News Live fan page on Facebook, I was using RSS Graffiti to post new stories to Facebook (usually in batches of 3-5). RSS Graffiti is super-easy to set up, and it simply ties into your existing site's RSS feed to post new stories from your site to Facebook.
However, after I redesigned the Catholic News Live website in Drupal 7, I decided I'd take a few extra minutes to rework the site's social integration for Twitter and Facebook (I was using HootSuite for Twitter postings—a batch of 5 stories per hour maximum—and RSS Graffiti for Facebook.
People who followed both accounts weren't engaging, liking, or even sharing/retweeting stories too much. The twitter account was doing okay, because Twitter doesn't seem to hide tweets from other users as much as Facebook likes hiding certain posts (especially those from automated apps like RSS Graffiti).
Other graphs, like the shares, likes, etc. are similarly aligned.