Twitter’s CEO, Dick Costolo has recently revealed, during a meeting with the New York Times, that the micro-blogging site is working on a way for users to be able to retrieve old tweets.

Currently, Twitter only gives users access to the last few thousand posts made.

The decision comes at a time when the popularity and growth of Twitter, with 140 million active users, has lead executives to look into a way to build a solution as increased demand for such a service has become apparent.

Costolo said, “We’re working on a tool to let users export all of their tweets. You’ll be able to download a file of them.” The new tool is likely to limit Twitter users to their own backlog of posts rather than the entire collection of posts belonging to other users on the site.

Twitter has been slower than other social network sites like Facebook to make such a tool available. Facebook allows its users to download a file with their data. However, though other third party sites and apps have found ways for users to backup their tweets, these can often be costly.

“It’s two different search problems,” Costolo commented. “It’s a different way of architecting search, going through all tweets of all time. You can’t just put three engineers on it.”

While Costolo did not reveal when such a tool would become available, he did say that it was currently in the works.