A "percent of collectors with this game" column for our collection page

[SpriteCell]

One of my favorite features of this site, and one that I haven't seen on other similar collection sites, is seeing how many other users own a game. Sometimes a game is much more popular than you would have guessed, sometimes you find out you have something few others do.

This is only visible on a game's page, though. What I would really like to do is to have a column for it on my collection page so I could sort by it and see my rarest and most common games.

Being able to sort by developer or even ESRB rating would be cool too.

[MetalFRO]

This is an interesting idea. I'm not a database guy, but I would imagine it would require not only changes to the collection page templates, but also adding a couple new indexes, to allow for quick sorting of the data by those metrics.