I figured we could make a single thread for the 2012 Chiefs free agency signings and when we re-sign players.

Feb 9 Jake O'Connell (TE) - Re-signed by Kansas City (One-year contract)
Jan 24 Kyle Nelson (TE) - Signed by Kansas City
Jan 9 Darryl Harris (G) - Signed by Kansas City

This is all I could find thus far.