After reading magic123's blog "What if Boonex goes down?" It made me think about another scenario. If you are not a vBulletin customer It's likely your not aware of what has been going on. I came across some articles that talk about the death of Jelsoft Enterprises Ltd ( vBulletin) and other many other companies that were bought out by INET (Internet Brands).
You can read these articles here.
http://vbtruth.com/internet-brands-investment-nightmare-vbulletin/155/
http://www.digitalport.co.uk/content/127-vbulletin-end.html
http://thestreetsweeper.org/article.html?c=3&i=1109