i was just browsing the bl forum when i noticed that the "games" in "Discuss other games" suddenly turned into a link, so i hovered my mouse over it and it showed some sort of stuffty poker ad.
then i went to community projects and read dragon of dalore, and someone had a post with "room" in it, and once again, that was a link too and it showed me some sort of hotel ad.
currently scanning with an antivirus to see what else has been hiding in my computer.
EDIT: it was some chrome extension called Browse2save, no idea what the hell it is or if i downloaded it.