We (Colorado Springs/Pikes Peak area) have had a reduction in searches, per se, but we often get callouts for folks with cell phones who can get a signal but have no clue where they are. So, we do the "can you see this peak" or "do you see the city lights" drill, and can usuaully narrow down where they are so we simply walk up the trail and "retrieve" them. What cell phones have done is eliminate a lot of the overdue hiker stand-down calls we get when someone shows back up at home after going for an unplanned dinner after a hike.
However, we're still one of the busiest teams in the state.:rappel: