On: SFGate inserts a link to the story when you copy text on their site. Try it

[barrkel]

AdBlockPlus. It flags .tynt.com as adware, so sfgate just seems like inert text to me.

With respect to NYT, I've found this rule to be quite effective:

|http://graphics8.nytimes.com/js/app/*

Kills that nasty action.