A slight pain to install because you have to modify your Joomla template to include a special CSS file. Can this be made better I wonder?
Number of languages are limited. The quick fix for me was to download GeShi and copy from there my desired language files into this bot's directory and update the bot's config.php file. Suggest including all GeShi language files and allow the user on installation to choose the languages that may be required - there are 86 languages in GeSHi to choose from, so you don't want a pull-down list every time you edit code.
With this in place, I think that we will have a killer Joomla bot.