The process is simple, all you need is to visit this vary page on the day of grand prix (which lasts three days from Friday to Sunday). Live links for each grand prix are posted and made live around 1 hour before the opening practice session on Friday and they stay live through out the weekend.

Around 70+ links are available all ranked according to quality of streamer and his reputation. All streamers are ranked and they themselves post links which are then ranked according to how many votes each link get. higher the votes, higher the rank for the stream which means easy to find streams for users.

1). becanse of believe motoGP is proper sport with big following. Here you not only need to be a best rider but also need a best modified bike to compete.

2). Because of more interest in the sport really.