Whitey - 8:12 am on Mar 17, 2012 (gmt 0)
Content that folks register engagement with.
If you don't attract compelling attention, then it's probably not cutting it. Apply that principle to all aspects of your site, including the UI.
You can have any of the above suggestions, but it's the value of a powerful element within any of that which will do you the most good. Quality that leads to quantity.