I agree with banredbeans in that some of these recruited teams bring new viewers to the show, and ultimately that benefits all of us.  I may not like it, and I wish it wasnt so, but that's the reality.  Jeff & Jordan brough alot of fans to TAR that had never watched it before. Same with Rob & Amber, Caite, the Globetrotters, Maria & Tiffany etc.   
That being said, I could go a really long time without ever hearing "It looked like fun and thought it would be good exposure so I had my agent contact the producers"  again.
However, it seems lately that even the "regular" teams are recruited.   Being approached on a first date, being asked to apply based on a picture on FaceBook etc.  I HATE that there are teams being offered this amazing opportunity that have never seen the show before.  I  HATE that "relationships" are being created to fill a spot.  (do you remember the good old days when BVM claimed that this was a relationship show as much as a travel one?!)  And I HATE that this seems to be happening more and more recently.  (last season had 7 or 8 teams -out of 11- that were "recruited" in one way or another!)
I just find it hard to believe that the producers cant find interesting, diverse people with real relationships in the thousands of applications they recieve.