Huh-oh. Twitter backed Bit.ly flags rival Cli.gs as spam

Looks like Bit.ly's security measures are kicking in against rival cli.gs's short URLs.

It's not all that rare to get URL shorteners stacking on top of one an other; you just don't tend to notice when it happens.

This sort of stacking is commonly caused when a Twitter desktop client, set to use a tracking URL shortener, is used to fire off a retweet.

This screen grab shows what happens when Bit.ly is asked to redirect to Cli.gs. If you're curious the URL that the cli.gs points to is Flickr.com and to a picture of bigmouthmedia's Bjørnis.