Twitter seems to be testing a new feature that may feel familiar to social networkers.

As The Next Web first reported, the micro-blogging site is conducting a trial run of new terminology for the buttons users push to show their appreciation for tweets.

The long-time "Favorite" button has apparently been replaced for a limited number of users with a "Like" or "Star" option, though it is unclear whether the function works any differently. Currently, clicking "Favorite" lets the user save a tweet; by "liking" a message or stamping a star on it, the tweet may be conserved in a separate list, or simply notify the original poster that someone liked their message.

A Twitter spokeswoman declined to comment on the reported testing, pointing instead to a May blog post about a push to emphasize the Favorite button.

According to TNW, users have been able to Favorite tweets since at least 2008, a popular feature the company boosted in the spring by pushing the option to Reply, Favorite, or Retweet to the forefront of posts. Twitter users have Favorited literally billions of tweets in four years, the tech site reported.

Adding a Like option could start a turf war between the micro-blogging site and Facebook, which has led the popularization of the "like" concept with its iconic blue-and-white thumbs-up image.

Last week, Twitter made headlines when it blocked access in Germany to the account of a neo-Nazi group called Besseres Hannover—marking the first implementation of country-specific blocking by Twitter. The group's feed actually remained live for followers in the U.S., but was unavailable in Germany.

Meanwhile, the company indicated in September that it will unveil a tweet-downloading archive feature at somet point, allowing users to ditch third-party tools and access every 140-character comment sent since opening an account.