Its easy to imagine how this might be interesting at an event like a concert or even something more dramatic like an earthquake.

There will likely be many use cases we havent even thought of yet which is part of what makes this so exciting.It is worth noting that our own Twellow already has a feature called TwellowHood, that lets you find local Twitterers based on their city of residence. This can be a useful tool for connecting with people in your area, or from areas from which you are familiar.Twitter will be adding the feature to Twitter.com as well, but will release geolocation to developers first. So look for this functionality on various Twitterapps before finding it on the site. Twitter seems to be stepping it up in the way of usability. They also recently announced plans for retweet capabilities see why thats good for businesses here.