Last week I made the jump to MovableType 3.0, and so far I’m very happy with the decision. I host a couple of blogs for friends, and I think the 3.0 interface is really great. Not that operation of MT was complicated before, but it’s even easier now.
However, the best feature, bar none, is comment registration. I had noticed an increase in comment spam before the upgrade, and I was wasting a lot of time deleting comment spam. I don’t know if the increase in spam means an increase in visibility for the blog, but I sure hope so. No matter, with MT 3.0, registered users can post comments to the ol’ blog without my intervention, but all other comments are caught before they go live. That let’s me stop the “Penis Enlargement” comments on my posts before the go live. That alone is worth the price of the upgrade.