The increasingly popular microblogging site Twitter Thursday activated a new ‘opt-in’ geolocation feature which will enable the users of the site to add on their geographical location to their posts.

According to the information forwarded by Twitter co-founder Biz Stone, the new geolocation feature, which turns off by default, will initially be available only to the Twitter users in the US; with plans already in place for introducing the feature in other countries in the near future.

Noting that Twitter users are all-excited about the new ability to “append geographic data to some of their tweets,” – thanks to the growing interest in location-sharing applications, games and services; Stone said in a recent blog post: “People who choose to add this additional layer of context help make Twitter a richer information network for all of us -- location data can make tweets more useful.”

Though some of the Twitter users are somewhat apprehensive about turning on the ‘optional’ geolocation feature, mostly because they fear that it may prompt stalking, it is being forecast that the early negativity about the feature would not discourage a notable number of users from getting on with location-sharing.

In fact, with a number of Twitter users already ‘tweeting’ their current location via the Foursquare service, Stone opines that the new geolocation feature for Twitter will facilitate users in finding information about their nearby areas.