Techdirt: Swedish Court - News Site Embedding A YouTube Video Guilty Of Copyright Infringement.

According to the court, it was “obvious” that L’Avenir had published the link to the claimant’s YouTube video with the intention of pursuing a profit ...

Yes, it's Sweden. But these decisions are used as bases for judgment internationally. So, this means that if you're a 'pro blogger', a for-profit concern, and you link shady YT videos, you could be liable.  As a weblogger, you must keep an eye on these developments!