So if I read the following right you cannot bid on Travel insurance but you can bid on travel insurance! Also google will put your ad on travel insurance online keyword if your keyword is just travel (providing you have content match)

"Dear Affiliates,

As of 29/04/05, our keyword policy will become restricted. Affiliates are not permitted to bid on the Travel Insurance Online brand. However, if you would like to partake in keyword buying, please use the following

1. travel insurance
2. holiday insurance
3. cheap travel insurance
4. cheapest travel insurance
5. annual travel insurance
6. family travel insurance
7. worldwide travel insurance
8. travel insurance quote
9. direct travel insurance
10. travel insurance uk

If you....."