Today was Twitter's own first conference, Chirp!, which took place in San Francisco. Aside from announcing the astounding fact that Twitter has over 105 million registered users, Twitter announced some new location features similar to Foursquare as well as some new tools for developers to put in their apps.

The first new feature coming to Twitter is the ability to tag actual places to location sharing. Currently, if you add your location to a tweet, it puts the city or area you are in. With places, it will be able to determine if you are in a particular public place and provide that as an option to select as your location.

The second feature that will be a tool available to developers at dev.twitter.com is no more rate limits on the user stream API. This means using desktop or mobile apps--or anything using the Twitter API--tweets, replies, DMs, retweets, and other content will be pushed automatically in real time.

Developers also now have the ability to attach any metadata to a tweet sent out from their app, such as a tag for the app's name. This will enable new arrangements for sorting and filtering tweets.