I put a bit of work into this database myself. I would love for some of that work to show through on the other side when this site and that other site get running full steam ahead!
My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right