A Facebook engineer has been spotted tweeting from an application called Penguin FB, as you can see in the picture, and it doesn’t take a genius to work out that the FB probably is probably short for Facebook.

So, putting two and two together combined with denials from Facebook and the removal of the tweet by engineer Ross Blake, there’s a very good chance that this was a test of a Twitter application on Facebook which allows users to tweet directly from the world’s biggest social network.

The move would be in line with Facebook’s drive to get in on the act in some way, whether that be by aping Twitter or, in this case, by trying to hold on to a lot of the traffic through the API. Doubtless, we’ll hear more about it soon.

(via Facebook Insider)