Thanks to WiForums support for giving me this info...I added it to the first post...
- You can only edit posts that you posted from the Wiforums script. If you post from the regular vBulletin you can't edit it in the WiForums.
- The Quote button is the "Reply w/ Quote" so you can reply to a specific post.
AFAIK there is no Multi-Quote option yet. To save on bandwidth, the quoted text will not be shown in the reply box, but it will be displayed once its posted.