1) should you choosen't have inked however, it could be vital, due to the safety breaches. Alternate...

1. Do you think it's time to upgrade from Joomla! 1.5 website
to Joomla! 3.x?
1) should you choosen't have inked however, it could be vital, due to the safety breaches.
Alternately, you may watch for your site to become assaulted...
Contemplate that should you possess a complicated website, the update procedure mightn't be
straightforward, particularly if you employ extensions or when you have accomplished some layout
adjustments.
2) About Joomla
"Joomla is just a free and open source content management process (CMS) for writing content. It's
created on the style-watch-control net software structure that may be employed separately of the
CMS.
Joomla is created in PHP, employs object oriented development (OOP) methods (since version 1.5)
and software design habits, retailers info in a MySQL, MSSQL (because version 2.5), or PostgreSQL
(because version 3.0) repository, and contains capabilities for example site caching, RSS feeds,
printable types of websites, information sensations, websites, forms, research, and service for
language internationalization."
Resource and additional information:
https://en.wikipedia.org/wiki/Joomla
http://www.answerbag.com/q_view/3234967