Not being into Marketing i thought i would run this past you.
In UK we have a huge Chain of supermarkets called Tesco. THey sell everything from food to Car Insurance.
THey are very competitive especially for their insurance products.
Why would they advertise on TV that they have set up a new "price comparrison site" comparing their insurance products against all the others in the market place and you are able to purchase that product through their site.
Surely they cant believe the public will think their site is truely independant, it must have a bias to their own products or they will be selling others Companies products.