[Plugin: Facebook Share Statistics] Less update frequency?

Hi, first I would like to thank the creator of this plugin for its simplicity and efficiency 🙂

My question is: is there a way to have a less frequent updated statistics? Because it’s written that it’s updated every 20 minutes or so. A 24h update would be enough for me and for many people I think.

Also: could you explain roughly how the plugin works to display these statistics, I mean without the need of being logged on Facebook as an administrator?

Finally: it would be great to have a kind of “Top 10 most liked posts” widget to add in the sidebar.

Thanks 🙂

http://wordpress.org/extend/plugins/facebook-share-statistics/