Sounds like a good idea ioi. Weed out the garbage users from stuffing up your site.

I think they shouldn't be visible at all... Or at least remove all the posts the guy made in the thread he was banned

And removing the posts of perma banned users is a good idea

Sounds good, I know there's been a debacle over not seeing the ban-able offense previously, which in turn leads to massive PM'ing and misunderstandings and possibly even hatred and/or mockery towards one or several mods undeservingly.
If someone makes and ass of themselves, why not imprint it unto the stone tablets of eternity for all to see and judge by?

I like the idea of keeping the comments, I like to know what happened.

I think all should be visible, unless its that bad that is makes you want to shoot yourself (or something of the sort)

Because if they are visible, members can justify if it was a right decision or not.

I agree the posts should be visible

Sounds good to me.

 so if a user posts porn in their sig you want to see that? Sorry no thanks.

The point is with a temp ban we can edit any overly offensive posts and leave the rest in place. If it's something obvious we can't fix (porn sigs, etc) or lots of spam, we perma ban them and all the posts are gone. Best of both worlds. :)

im in, for porn in sigs