Family Matters, by Allan Heinberg et al (2006).
Hmm... This one was a little bit less good than the first, but I still enjoyed it. The team is struggling with telling their families, the issues of identity are still being resolved (confusion over codenames), and a few big secrets are working their way out. Certain plot points feel contrived (like the introduction of a new member), and the final conflict is reminiscent of the showdown at the end of the last volume. But still, asses are kicked and fun is had. That's all I really came to this book asking for.
I will say, however, that I hated the art style for most of the Young Avengers Special, which is included here.