Link overlays?
 

Lately I've been noticing something turning some words/phrases in posts into dark-green links. Many of them don't appear to have been made links by the poster, something is doing it dynamically. When I click on them, I end up being taken to various external sites (eg. findit.com). Since I consider that kind of link a clear security threat to my own systems, I've re-enabled AdBlock Plus (which blocks whatever's creating those spurious links). Are these links intentional behavior, or is it something an advertiser is doing without telling anyone?

The adwords links are intentional I remember Dolby saying.