The only real issue I have is folks posting stuff for sale (usually implied FTF transaction) that don't include their location - heck, even "Western Slope", "N.E. CO", or "Metro Denver" is better than nothing.
I guess I don't get it why folks don't just add their location into their profile and be done with it, but ces' la vie' - I know the policies of the site are pretty clear on having a location included in your posts based on the following:
http://www.co-ar15.com/forums/showthread.php?t=11113
2. a. viii. When asking for a face to face transaction and/or local sale/trade, include your location.
Just my 2 cents.