I wrote about it earlier and some quick thoughts about how it might evolve, but this evening Twitter formally announced Twitter local trends:
As Twitter evolves, and more people share what’s happening in their own world, we want to provide another way for people to discover topics that may be relevant to them. Last week we began to slowly roll out a new feature called Local Trends to expose what people are talking about on the state and city level, and today we’ve fully launched so everyone can use it.
This can evolve into a helpful discovery tool for Twitter users; and there’s some real, potential SEO value here too.
