FYI, those of you with a Ning social network can look forward to an iPhone-optimized interface after tonight’s release. It will be an iPhone web app (not a native app), and while iPhones will automatically be shown the iPhone interface, you can go there manually by browsing to http://yournetwork.ning.com/m. While you can participate in the network, not every feature is available for the iPhone interface.

We’re glad to see companies moving forward with developing optimized versions of their sites for the iPhone and other handheld devices — while “normal” sites are often tolerable on an iPhone, sometimes it’s better to present a faster, more usable interface that focuses on what a mobile user likes to do the most.

Edit: the release has been pushed back to Friday, September 26th. Then again it’s been pushed back a few times before, but we shall see.