It created it with vBulletin 4 in August 2010. I converted to Xenforo on October 2011.
The 8th Legion is a general chat and media law and entertainment forum. I will be writing tutorials to teach people how to copyright their work whether it be photos, music, books etc. I already post news and articles about copyright law etc but I still need tutorials. I use both Wordpress integration and XenPorta due to it's tight integration with the rest of the forum's modifications.
I switched to Xenforo because there is no official wordpress bridge for vB4. I was using a vB3 wordpress bridge. The guy who created the bridge hated vb4 so much that he banned from me his site when I asked for vb4 support. I did the best I could with the bridge. I even got avatars to work in the vb4 version. Later on I learned that Wordpress integration for Xenforo is supported on www.xenscripts.com
In wordpress / xenforo integration, members can reply to wordpress articles with their xenforo account but the added plus is that article creates a thread on the forums as well and your comments that show up in the wordpress article also show up in the forum thread that is attached to the article. If you post in the forum thread it will show in the wordpress article and visa versa. I use xenporta instead of wordpress as the main site due to the fact that I can easily integrate and configure more modules to the home page and it wasn't hard setting up a slider at all.
Some addons I use on The 8th Legion:
Xenscripts Wordpress Bridge $40 Doesn't work with WP 3.3.1 Used w/ XenDynamic
Social Groups $40
Post Ratings $30
Ad Management $30
Donation Manager 30
Arrowchat = $20 for yearly updates.
XFArcade $20 (That's not the price, you have to donate)
Ragtek XF Addons $10 membership
Edit History $10
And many more.
I've created all my skins with the exception of the mobile theme from XFStop.
I had photopost and arrowchat on my old vB4 forum. I added arrowchat to my xenforo forum and moved both photopost and vbulletin albums over to XFR UserAlbums. Converting the site over from vB4 to XF was easy at first then became difficult as I went on because I was using mod-rewrite urls for the vB4 forum and my xenforo was in another directory. I also had Wordpress integrated with vbulletin on the site root as well. You have to have them in the same directory to integrate with each other but in Xenforo, you don't have to.
I used these threads to upgrade:
vBulletin 4 Importer
Use Import Redirection
With vBulletin 4 Redirection Scripts
When I got stuck with redirection, Jake helped me out. He's pretty awesome.
To upgrade, I imported vb4.1.7 to XF 1.04 then upgraded to XF 1.1.04 Beta after the import was done. The blogs did not make the import due to a bug in the vb4 Importer. I had to manually add each blog and comment unfortunately. I lost attachments. Avatars, Albums, Social Groups and Images made it just fine though. I lost a subforum that had a couple threads in it. Pretty annoyed about that but it's no big deal. I also lost 8 members. All the losses came when I had to do another import after the first import got stuck on the blogs bug.
My XF site is 30% faster than it was back when it was on vB4. I'm really amazed.