Of course it´s terrible what is happening in Tibet right now but I don´t think that boycotting the games would have any effect of it. The only ones who are bothered by a boycott are the olympic movement and the athletes who work for years for the olympics.
If a ggovernment wants to do something against this they should DO something against it not just show that hey sympathize with the Tibetans and a boycott wouldn´t change anything, I think.
As I said before, I do not support any of Chinas actions in Tibet but a boycott is the wrong way.