Try Real Preview for Joomla 1.5 or 1.7 right now. You'll wonder how you lived without Real Preview and version control for articles in Joomla!
The Demo
The demo is a default joomla installation of 1.5.23 / 1.7 stable and is rebuilt every 10 minutes so you won't have too long to write long articles, but you will be able to demo and see how real preview for Joomla works with version control and full site view. Various components are deactivated to prevent abuse.
plus K2 2.4 
Frontend: demo.realpreview.net/j15
Backend: admin login
username: demo
password: demo
plus K2 2.5.4
Frontend:·demo.realpreview.net/j17
Backend:·admin login
username:·demo
password:·demo
