in asp.net application there may be different
server errors like file not found,server error,
etc.when those errors happens default ASP.NET error
page is shown which looks odd and users don't
understand what type of errors occured.to overcome
these problems it's a good idea to use own
error files.

silverlight application are great.you can add silverlight
application in your asp.net project easily.follow the
steps and you will know how to create and add silverlight
applicaiton in asp.net application/website -

Gravatar.com is used to store one's avatar image according to email.
then if you comment in any application using your that email address
where gravatar image has been programmed then your avatar image will
be displayed in the application.

when you build a software make sure that you built it by object oriented way
and you organized your files in folders as following way -

It's a very common requirment that you may want to
insert ad codes or some other texts in a joomla article
or elsewhere.I am going to show how it can be done so
that if you want some text like "{replace it}" will be
replaced by your code -