I'm working on an open source CMS called Jien Framework, which is based in PHP5.

I would like some help on implementing a categorization system that uses the lft/rgt tree node style.

I am in need of a modification to the Community Answers plugin for Joomla which does the following: 1) When a user asks a question he is given the choice to pay bitcoins once the question is answered. 2) User with best answer is given the winning amount. 3) Optional Fees on deposit. 4) Needs to be securely coded to avoid theft, hacking, etc.

Source code will need to be made publicly available in github or similar.

Can use MTGOX API: https://en.bitcoin.it/wiki/MtGox/API/HTTP

Community Answers plugin is (GPLv3)