It seems to me that either lots of people are much better at driving traffic to their Clickasnap site, which would be no surprise as I'm clearly not finding the way yet, or that Pro feature of a front page display makes a significant difference. Failing that I wonder if it's dead easy to find a script to fudge the system which seems more plausible.
Today I added this blog onto the RSS feeds option on clickasnap so I am interested to see if it makes any difference to the content as cross sharing content is of value but I seriously doubt anyone actually looks at feed content.