[cernst]

A cool idea, too bad it is only for co-location.

When I look at the domain, I'm thinking "Great! I'd love to see the data centers around me! It may provide contacts for future employment or peer networking opportunities!"
When I get to the mainpage, at 1024x768, the only mention of co-location is in the small text at the bottom.

I would have liked to add my data center to the site, but my data center is to support my corporate company, nothing else.