Personally... thank you so much for not using Stack Overflow. I find it ugly and confusing with strong established characters drowning out others.

What I really like about what you've done is the aggregation from many sources. Potentially the one true place to look for everything Mongo and to follow progress of it. The reddit/HN model applied to a specific area of knowledge and specialised... can't wait for it to get traction.

It's nice. Well done. Now just to get a load of content in there.