AjiNIMC - 5:49 pm on Mar 23, 2009 (gmt 0)

If I understand it clearly,

You have

Blue widget
-"Blue widget"
Right?

I guess in this case majority of keyword under the group will be barred. I have also seen that Google puts a lot of (sometimes unwanted) intelligence into Ad matching.

I would personally won't advice doing,

Blue widget
-"Blue widget"

I would rather go for something like

Blue widget
-[Blue widget]
.... etc etc

I remember a case
XYZ area Painting and XYZ area paintings ... this (exact match) keyword in itself is triggering painting where as other matches were relevant XYZ area painting contracts (or companies e.t.c) .. I doubt if I would have gone for a phrase negative keyword.

I understand it will not show impression only when this phrase is there in the keyword but what if the keyword that i am promoting is a movie name. shall I still go with the same way..

Do let us know some more details, so that we can help further.