I was always fascinated by javascript.
It is an amazing programming language and very hard to learn.
Now javascript can be used outside of the browser environment on the
server side.
And you can execute shell commands too.
Read here:
http://nodejs.org/api/
I am doing a project using it.
And there is no need to run a web server with nginx or Apache.
You can also run TCP client or server with it.
Node.js is also useful for doing some nifty things to communicate
using JSON with the browser.
Javascript and JSON are close relations and nowadays nearly everyone
is using JSON because of the lack of restriction for making calls
within the same domain which is an issue with CGI.
But I have not used it much.
Node.js is cool because it uses event loops, it has a libuv implementation
which gives it a lot of functionality for performance and it is portable.
-Girish
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Gayatri Hitech
http://gayatri-hitech.com