"Preview Post" shows how the post looks, when spread across the whole screen.

But after actually posting, there's the player's Avatar and information taking a side of the page.

-"Preview Post" should show the real size of the page. not bigger space.

I support this. When I use "preview post" it doesn't turn out like it is when I posted it.

Like Mafia said, the avatar, signature and all the other things will be put into place so preview posts vary from each person.

Also in preview post, the text seems smaller than what it actually is. This also applies to private messaging.

Support this too, with the state it is right now it helps in some ways but in others it doesnt, same for signatures, in a post the signature is going to be spread aross the post and not on the actual text box, so when you write a signature that is has 2 lines without vip/toriprime, but the text box has more than 2, it should be allowed