Bugs

 o PDF generation
 o The code sucks

Wanted features

For the user

 o Better/faster AJAX GUI
 o Comment pages for problem/solutions
 o Better GUI
 o Pages for more/different sets of problems/solutions

For the author

 o Get rid of ndsphere functions
 o Better latex blacklist (whitelist instead)
 o Metapost figures
 o A good AJAX latex editor with syntax highlighting
 o Latex style/command documentation

For the admin

 o Code documentation
 o Better latex class in php
 o User accounts/user levels/logging
 o Better php/gwt integration

Possible features

 o Ajax interface (SOAP/etc)