Well i agree with obolus!! There are many bugs in CMS, the serious thing is the SQL injection.

@ Orc, That's great to code by ourself sometimes; but Knowing accurately CMS will guarantee you to finish many site projects by spending short of times.

As i remember from my Software engineering teacher, he said that Component-based softwares have been more and more popular.

At the moment, Everything, every tool exists
The problem nowadays was able to re-construct those component to meet our requirements , he added.

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Ijajaja