I just saw this on twitter. I doubt that Geno saw this but it's nice of him to show some support for Geno. He sounds like a true friend. Brady Quinn sucked though! No wonder these two confide in each other. Here's an excerpt. I honestly forgot he was with the Jets. Check out the full letter here. 
The past is the past and there's nothing you can do to change it. Believe me, I was in your shoes back in 2009.
All you can do is learn from past mistakes and get better. THIS IS AN OPPORTUNITY FOR YOU. This is where that resiliency I saw in you needs to pay off.
Don't let anyone on the outside tell you otherwise, or that "your season is over." You have five opportunities to finish this season strong and show any doubters that you have ability to be a full time starter in this league. Use all the negativity as motivation, and get back to the basics and fundamentals.
And even though it may be out of character, don't be afraid to speak up and lead the men in that locker room.
I believe in you, now go out and do it.
-Brady