I've been watching the first seven seasons on DVD when I discovered something called tarflies.com in which the site talks about cons and interviews with former racers. I was informed of character aspects that weren't aired on the show.
This board is dedicated to talking about tidbits and facts about the teams that you wouldn't know about by watching the show.
Ron and Kelly from Season 7 were actually broken up prior to the race. In an interview, Kelly mentioned that, being the romantic, she wanted to see if they can rekindle their relationship. Ron's decision about commitment was made well before the start of the season.
In addition, she claimed that the producers wanted to see if Ron can be paired with another POW to make it a more interesting team.
Jonathan/Victoria and Adam/Rebecca from Season 6 had an alliance which was not aired. This was the reason for Adam/Rebecca yielding Freddy/Kendra in Ethiopia.