[joeyo]

What are you doing differently than the existing academic trees---neurotree, economicstree, etc (http://academictree.org) ?

[mende]

Their UI is very difficult to use, we tried, but give up eventually. That's part of the reason we created phdtree.org. We believe we have a much better user experience and "wiki" support. Try phdtree.org, and let us know what you think.