The NFL released compensatory picks for the 2011 NFL Draft and the San Francisco 49ers and Oakland Raiders will get extra picks for the upcoming draft. The 49ers received two compensatory picks in the 7th round, while the Raiders received one compensatory pick in the 7th round.
The general equation for figuring out compensatory is not really known as far as I can tell, but it basically involves a formula based on salary, playing time and postseason honors. Not every free agent lost or signed by a club is covered by this formula.
The Raiders lost free agent Cornell Green and signed free agent Kyle Boller. Although the Raiders did not suffer a net loss of compensatory free agents last year, under the formula, the compensatory free agents lost by these clubs were ranked higher than the ones they signed (by a specified point differential based upon salary and performance). This resulted in the Raiders receiving the 40th pick in the seventh round, which is 240th overall.
The 49ers lost free agents Arnaz Battle and Tony Pashos and signed free agent David Carr. In spite of the fact that this is a fairly motley mix of free agents, the 49ers received the 38th and 49th picks of the seventh round (238 and 249 overall).