I just discovered by accident that when I have the Teoma toolbar installed, Google will block you from searching based on the user agent. Adsense blocks also will not be seen. Try it yourself in Firefox or Opera or any other browser that lets you change your user agent. Add "TeomaBar 2.01" which is what the toolbar adds. Or just install it on IE: [sp.ask.com...]
Note that this is NOT Teoma/Ask's fault. It's Google purposely blocking.
