Jordan McCollum noticed today that Twitter is now displayed ads on the Twitter home page just under a users follow and follower count.
There is not any announcements yet about this but it looks like they are testing the waters with an advertisement in that area of the page. Text ads, being less intrusive than a lot of other ad formats, are a good choice for Twitter in my opinion. I don’t think many people would mind a small text ad on the side of their Twitter bar.
It’s been like this since I joined in January 2009, it’s not new.
The links which were there before were software applications related to Twitter, and they had not paid to be there.