Hi,
Yeah. I was very very against twitter myself, but within the define world of PlayMaker, for spreading the word, I must admit it's useful, as others use it, so I have to adapt. I would simply use twitter to simply gather around useufl info around Unity and PlayMaker. It does pollute your daily routine a lot tho, you will face the typical issue of being notified when you don't really need to, and this is the big issue/advantage paradox...
Otherwise, I simply keep an rss feed on a netvibes page of the PlayMaker forum, and I always double each news, with a tweet and a post, but you'll likely to miss it more via the forum than twitter of course.
Bye,
Jean