It tracks mentions of players on Facebook by day -- you can click through each day of the tournament and see who was being discussed the most. The players with the most mentions appear larger than the others. It's sort of hilarious as it usually looks like one or two players are either giants or playing against Lilliputians ;) For example, on the 24th Quagliarella is just sitting on the pitch surrounded by tiny people.... on the 29th, it looks like CRon is about to kick a whole bunch of miniscule players off the pitch. Hilarious! You can sort by country, last name, or number of mentions. Anyway, thought I'd share in case y'all hadn't seen it already.
Edit: added screenshot --