Your mission, should you choose to accept it, is to create an online 'evalbot' for the latest stable version of Perl. This could be a crippled version of Perl, such that it will only run for N seconds, refuses to execute system commands or load certain modules and so forth. The goal is simply to give users a zero-footprint way to play with Perl code in their browser. Bonus points if it is easy (and safe) to host.
Has it been done? Is it possible? How difficult would it be? Is it easy enough to solve only the 80% case? Could you use AJAX and PPI to do syntax highlighting in the textarea?
The entity known as "buu" on MAGnet IRC has an excellent Perl eval bot.
