What are the pros/cons of having vb on its own site?

[Breakaway]

I have noticed some sites have forums that are on a completely different domain instead of their main .com website. I was wondering why they do this?

[Breakaway]

So has there been any word about how long this will take?

[Breakaway]

If I have a website, how easy or hard is it to have vbulletin wrapped inside of it?
Also, would it be easy to wrap the forum in a CMS's like wordpress, joomla, drupal etc?

[Breakaway]

In other forums I've seen the option that people can save friends, profile comments etc. Is there anything like that on VB?

[Breakaway]

when you say server, is that the same as host?

[Breakaway]

Hi, if I have a forum, let's say it is SMF on www.website1.com/*forum and I wanted to switch it to www.differentwebsite.com/*forum and also change it to vBulletin; is that possible? easy?

[Breakaway]

Oh okay, thanks.

Here's another thing, kind of related to that that I wanted to know. Is there a way so that I could make picture links at the top of the main forum? If someone clicks...

[Breakaway]

I was also wondering which content mgmt system would work with the forum. ie. Joomla
Also, would it be easy to wrap the forum in it?
Lastly, if I want users to have profiles in vB, should...

[Breakaway]

Is it possible to modify the front page of the forum such that it only has custom pictures instead of all the words and tables?