I think I've read the RSS 2.0 specification a thousand times. Which is a good thing. I can't count the number of times that I've found something "new" that I hadn't quite grokked in prior readings.

Today, this little gem jumped out at me.

"The purpose of the (textInput) element is something of a mystery. You can use it to specify a search engine box. Or to allow a reader to provide feedback. Most aggregators ignore it."

Its a shame that most aggregators are ignoring this element currently. I can think of a dozen nifty things that I'd like to try out with this. Rating systems, authentication (?), commenting, voting...

Of course, it wasn't too long ago that most aggregators were ignoring the enclosure element. Now look at them - everyone is rushing to support enclosures so that they can ride the Podcasting train.

Maybe the agg-dev guys will pick up on this nugget of coolness as well.  Wait a second. I *am* an agg-dev guy. Okay RSS generator folks - enable me! I'd love to implement some of the interactivity that this makes possible.