End Every Post With a Question
I hate to sound like a scrooge, but the truth is that people are pretty self-absorbed. Fan page visitors are much more likely to pay attention and respond to your posts if you address them personally and encourage them to get involved.
Pairing your posts with questions is a great way to accomplish this. You’ll get more engagement and better response if you post a link with a question or call to action, rather than just posting a link solo. Invite conversation whenever possible, with each post you do.