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Interaction with visitors is a key feature of the best sites on the web. After all,
the most popular computer operating systems in the world may be the ones used for
game playing machines. It seems that people hate the pickiness and precision of
computers that allow them to do the things they do. On the other hand they love the
illusion of the computer as another person.
With dynamism comes interaction. Dynamic websites means that different actions by
the visitor cause different behaviors, i.e. outputs by the site. All this is done with
programs. At present, backend or server side programming is far more reliable than
front end or client side programming.
The reason for this is that programming on the browser, i.e. the client has to be
done with the language Javascript. And each browser, each version of each browser, and
in fact each version of each browser on each OS such as Windows, Mac OS, or Linux is
a different program often with a different version of Javascript on it.
By contrast, the server side of most any website is a single computer running a
single OS and a single version of whatever language you do your programming in.
Dynamic Websites/Simple Content Management/A Free Form Mailer for Your Site/Easy Counter in Perl | 
