A six-month-old microblogging site that's pretty much like Twitter is growing like crazy with users surging 73 percent in just 48 hours.

According to The Verge, the new social network called Mastodon has gained tens of thousands of users in the last few days, and the founder is attributing the spike to many Twitter users getting increasingly fed up with recent changes on the platform.

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"I brought all my friends to Twitter back in the day. I kept promoting it to everybody I knew. I really loved the service. But it continuously made decisions that I didn't like. So in the end I decided that maybe Twitter itself is not the way to go forward," said 24-year old Mastodon founder Eugen Rochko.

According to Rochko, Twitter had made several decisions that he believes is eroding its value, including limiting how big third-party apps could grow, and implementing an algorithm-driven timeline copied from Facebook.

Mastodon is more than a little like Twitter with the number of allowable characters as the major difference. With the new social networking site, posts can run 500 characters instead of 140. Moreover, users are given the option to make individual posts private.

Engadget added that another key differentiator from Twitter is the fact that Mastodon is a free, open source protocol that's distributed across multiple "instances," so there's no centralized server.

According to Engadget, Mastodon has been around since September 2016. A week after the decision by Twitter to nix @usernames from replies. This move apparently fueled more sign-ups to its competitor.

The Verge reported that Mastodon had grown its users by 73 percent to 41,703 users just in the past 48 hours.

Currently, Mastodon's master page says that registration for account is closed until the quality of its service can be assured for its existing users due to "exceptionally high traffic."