Still think there's no good reason to have a Twitter account? Here's a damn good one: iPhone app-review site 148Apps has a Twitter feed that notifies you when an app's price drops--to zero.
See, developers frequently run temporary promotions in which they give their apps away. Of course, it's all too easy to miss these freebies because you didn't know about them.
Based on what I've seen of twitter.com/148apps_nowfree, these promotions happen a lot. In the last 12 hours, I received tweets about at least 20 apps. Some darn good stuff, too.
Looking for a good way to keep tabs on this and other Twitter feeds? The popular desktop app TweetDeck recently made its way to the iPhone. Highly recommended.
Still not up to speed on this whole Twitter thing? Here's help: "Just what the heck is Twitter, anyway?"
Finally, while we're on the subject of free iPhone apps, I think many of you overlooked my recent post on AppGiveaway, a site where you can win promo codes for all kinds of iPhone apps.
In the past few weeks, I've registered for maybe eight giveaways--and won six of them. Your mileage may vary, of course, but for now it's like shooting fish in a barrel. Go sign up!