Help me to not get cheated (cheating, collusion, marking techniques)

[DeuceKicker]

OK I'll bite. There was much talk in another thread about collusion, which turned into a general cheating thread.

I'm not new to B&M play, but I'm a total newb at cheating--specifically, spotting cheating.

Players are so bad that I have a hard time accusing them of colluding for capping 63 against their buddy when they also capped with 63 against me last orbit. I've also read claims that people spot marked cards every single time they play, and I've yet to find any.

So what should I be looking for? I read Penn Jillette's book about cheating, but it didn't go specifically into techniques.

Can we get a thread about what to look for, as well as definitions of some terms? Most common marking techniques? Most common collusion practices? Common chip placement schemes?

I'll spend some time with Google, but it might help the community here to discuss it.