towards main stream.

What do one do when he sees something wrong.
The option that i use normally is to think. To think whether i would do that mistake myself. If the answer is yes i wont do anything. First be correct then correct. I would think.
The most generally used option is to correct it.
I used to hate a friend of mine who practices the latter method but lately i am thinking of going for the second option.
Reasons:
1) i am never going to change anything.
2) somebody who doesnt change anything (be it for the good or for the bad) is never considered significant.
3)its better to make some good changes.