Can someone tell me what effect to use to blur a face as someone walks and it follows them, I saw a video on this on youtube but the version I just downloaded from the site is a little different, doesn't have the same effects, I don't see the blue and hide or the obscure, was it renamed or do I need to download and install extra effects.

you can use

1) "Automask" (but the face will be just "squared")
the auto-mask effect is a lot bugged.. and is not possible to change the size of squares (changing x-y parameters make the motion tracking FAIL.. better to non touch this control)
also you can use coords from automask effect to hide the face with an image...

btw this is a tutorial: https://www.youtube.com/watch?v=LwCWaYoS74k

2) use the new "Motion Tracker" effect that can BLUR the face.

example: https://www.youtube.com/watch?v=u4NB-Ec ... Tgne67hmtu ( motion tracking at: 1:04 )