TipTip is a simple JQuery tooltip plugin for them who wants easily customizable tooltips for their website.
Its updated Version 1.3 is released on Mar. 23, 2010
Check it out
TipTip - JQuery Plugin for Creating simple tooltips
Tags: css, jquery, open source, plugins
See here is a very useful tutorial for those who are searching for to create shoutbox in PHP with AJAX and JQuery.
Its very useful tutorial showing how to use the ajax function of jQuery and how it can be used to insert and recover data from a MySQL database via PHP in a way asynchronous.
A shoutbox is a box where guests or members can type some messages and its shown on websites instantly.