Good list.
I was the [whispers]Redline Racing 4[/whispers] server. I was running in the top 5 at So6 in the FBM. On the first lap, in cold tires, I lost the rear end coming out of the final sharp right hander. As I corrected the rear, I had obviously lost momentum so I knew the guy behind me was going to pass me, but he hit my rear as I straightened up and this gave me a "boost", if you will. At the next corner I let him past, he couldn't work out why, but from my point of view, he had won that place fair and square. I usually go in with the attitude of "It's better safe than sorry" I would rather lose a position in one race than take me and others out of the race thus getting myself a reputation.
That attitude isn't always best, but you have to judge each case on its merits.