I really try to avoid going all in unless you are protecting you hand, which sometimes backfires because gamblers will call anyway with a draw. It is also correct that some people will think you are making a move and call you when you have the goods. I would go AI only with a set or top 2 pair AND the board was not showing 2 to a flush or paired. Watch out for those boards that have 2 suited cards because people absolutely love to chace the flush at almost any price.

I used to be of that school of thought that someone was buying the pot. 9 times out of 10 they are not. So I think there is some truth to that.