ASoIaF (questions and spoilers)

I'm about halfway through A Clash of Kings, and I have two questions I must know the answers to:

Does Joffrey ever get any sort of comeuppance? 'Cause he's a total bastard.

Do the dragons in this series have forelegs or are they like wyverns and do they talk eventually?

Before you get to Feast you will hate Tywin very much, I assure you. 

Also how can you like the Greyjoys?  To me their stories were the most uninteresting, and their water god fappage annoys me to no end.  And shit, I think I need to read it again because I hardly remember what Barric and Thoros did at all :/