Link overlays?

[tknarr]

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?