I've mostly steered cleared (well, almost entirely to be honest) of the whole drama, but here's how I've seen it:
Rebecca Watson got propositioned in a hotel elevator at four in the morning by a guy asking her to come back to his for coffee, after expressing that she was done for the night. Rebecca Watson, quite rightly, said "Guys, don't do that". Then the internet blew up (or at least, the Atheist/Skeptic bit of the blogosphere), and the fires from it haven't yet died down.
Alas, there are plenty out there who don't seem to get that it's pretty creepy to corner somebody you don't know in an enclosed space and ask them back to your room in the early hours of the morning.
Rebecca Watson appears to be one of life's marmites - people love her, or hate her. Given the massive amounts of abuse she receives, I'm unsurprised that she quite ready with the block button on twitter. Who can blame her? Even if she didn't get all the abuse, who cares? Twitter's for opting in, and if you don't want to follow someone, or simply just don't like something (for whatever reason), why not block people?
However, last night Rebecca Watson falsely accused someone (CoffeeLovingSkeptic on Twitter @TPRyan007) of calling her a cunt:
You can read his account here.
PZ's response was off par - not because he went and blocked a bunch of people, or wants nothing to do with CLS, it's because he's retweeted Rebecca's accusation, knowing it's not truthful (as he has commented on the blog post linked above). It doesn't take much to remove. Whatever the disagreements are, it's best to remain truthful. PZ went on to tweet:
Given CLS blog post, it seems the burden of proof really does sit with Rebecca? Or, an admission of confusion? It's hardly a fall from grace, but it's a useful reminder that, no matter how much you admire someone, everyone's human and fallible.
As PZ himself has said, nothing is to be held sacred.
Rebecca Watson has corrected the accusation that was made:
And PZ has also responded to CLS on Pharyngula.
If I had more time, and wasn't so tired, I'd comment further, but I tried, and couldn't get the thoughts in my head written down into a blog post.