wilderness - 4:05 am on Jan 20, 2013 (gmt 0)
Admittedly this is easier if you've got a browser with some distinguishing features.
It's not difficult to modify UA's, I have widget users due it occasionally. The user adds a keyword, notifies me of the word and I add an exception.
The most recent was a rural area that was assigned an Embarq IP from their local provider. (I'm not a happy camper with Embarq).