I came across this love point while reading an analytical essay...
After DH, we know that when it comes to being a Secret Keeper dying isn't good enough. If you get killed, control over the secret propagates to everyone who already knows it, and then they can all tell it. Dying just won't do, you've got to live - which means that you've jolly well got to hide out for the duration.
Sirius Black didn't wanna hide, which he spent all of OotP demonstrating for us. But as he stated, he knew that he was the Potters' obvious choice and that (if he did not hide) he would be taken by Voldemort and killed. Makes sense now. Thus he bullied Peter Pettigrew into standing in, since Peter would be really good at hiding.
I'm inclined to agree - Sirius does seem the type to do so, to me. What do you guys think?
Very true, although as Sirius states at one point in the books when he's explaining it all to Harry (I presume PoA but cannot remember for certain), he went into hiding, too -- because Peter was a bluff that no one knew about, so the DEs were looking for Sirius. The point was to have them not look for Peter. I think Sirius was just trying to be a little too clever (a job which he should have obviously left to Moony, lol).