well it's controverial and difficult to understand, but here are a few snippets of news about the barnett formula (pros and cons etc..) to get you thinking, if you "can be arsed"

http://news.scotsman.com/topics.cfm?tid=51&id=34822004

http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2005/05/10/nelec310.xml&sSheet=/news/2005/05/10/ixnewstop.html