it's quite nice, I have a couple of comments anyway.<p>Why only 2 columns? you have plenty of space for even 4 if you want or 3 if you do not want too much but as it is now it seems it's a lot of space wasted.<p>When hovering a link the tile becomes really dark and it's impossible to read, I don't like that.<p>It would be better IMHO if hovering cell would show the description instead of hovering the links. This would keep consistency because other way it feels... funny, can't really explain why...<p>But nice anyway good job.