I’m seeing an added “nofollow” attribute on links to client applications on Twitter right now, as shown in the screen-shot below. At first, the attribute seemed to come and go (it disappeared and reappeared by reloading the page), and even on the same page, sometimes it was not present on every link, as documented by this other screen-shot. Weird.
A screen-shot showing nofollowed links on Twitter
Before today, registering your own app and tweeting through that was a nice way to add a personalized, search engine-friendly “from {Your site name here}” link to your tweets and get some PageRank from Twitter. For WordPress users, the Tweetable plugin did the trick, while non-bloggers could use a PHP script or roll their own. But those efforts will be vain if Twitter decides to nofollow all outgoing links to client apps.
Experiment, glitch, or spam-prevention tactic (what else)?
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