This is a simple chat box I threw together for my website.

It keeps the last 100 messages on record, and filters out
a custom list of bad words. You can create your own list
by reading the instructions in "_word_filter.txt".

I offer no support, because this is very easy to set up.
Just open "Add_This.txt" and add that code to your web
page, and upload this entire chat folder to the same spot.
PHP does the rest of the work.