The link is to an article with little to no detail and a link to
http://anantgarg.com/2009/05/13/gmail-facebook-style-jquery-chat(http://anantgarg.com/2009/05/13/gmail-facebook-style-jquery-chat)
The site allows you to download the gmail style jquery chat app and then the next line it says it costs $49 for a single domain, $199 for 5 domains, $349 for 10, and Unlimited for $499.
Here is the copyright notice:
/*
Copyright (c) 2009 Anant Garg (anantgarg.com | inscripts.com)
This script may be used for non-commercial purposes only. For any
commercial purposes, please contact the author at
anant.garg@inscripts.com
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
*