Not sure if this is going to be a good question or not, but I don't understand how come Economics also shows up in Area 51 as being closed, when there is an open Economics group where people can post questions. Why two groups with the same name, one active, and the other closed? Which one was created more recently, the active one, or the closed one, and why wasn't SE able to filter out the duplicate name when the second group was created?
Here is the link to the more recent one: http://area51.stackexchange.com/proposals/61732/economics
There was an economics SE site before. It failed. You can read about when and how it failed in this Stack Exchange blog post: http://blog.stackoverflow.com/2012/04/when-a-site-grows-quiet/
The hope is that this one doesn't meet the same fate. See this other meta post: 60 days in Beta - Battle cry?