Effect
when you mean affect. GRRR.

Its
is the possessive form for It. (NOT it's!)

Separate
Learn how to spell it and never look the fool again.

Except
Why in the world do people confuse except with accept? It's (heh) a mystery to me.

Site
It's a web SITE, not a web sight, from which you may cite examples.

Y'all
What's wrong with just "you"? Nothing, that's what.

Ain't
Unless you're imitating (i.e. mocking) inferior English speakers, don't. Just don't.

Ask
The word is pronounced ask ... A SSSS K. Not axe, A SSSS K. If you have to practice a while by enlongating the S sound, I will admire your determination to correct your English.