Anyone know how to blur faces using photoshop? I took some photos recently and would like to blur some of the faces so that they're not recognizable. I've been using the brush tool, but it seems to just smear a big black mark on the faces, which is kind of creepy. I'd rather blur the faces, keeping the same (or a similar) skintone. This looks as if someone took a big gob of ink and blotted out the people's heads.

Advice? Pretty please?