@sc4dr, I'm sorry mate, but I
totally disagree with this. If you want to let faster drivers by then that's
your personal choice, but nobody else is obligated to do so and you have no right to ask or expect them to.
Being "faster" does not grant anyone more right to the track than anybody else. Everybody is well within their rights to defend their position and try to prevent a faster driver from passing, as long as they stay within normal racing rules. It doesn't matter if they're holding you up or causing the pack to catch you. That's part of racing, and if you're unable to make the pass on someone fairly then that's just tough, I'm afraid.
The one and
only exception to this is when the car ahead is a back marker. Even then it's still the responsibility of the passing driver to do so safely, without expecting them to dive off the track the instant they come up behind them.