Though the GET method was very useful, a
couple of serious problem remained.
First, the GET method only allowed a
limited amount of data (1024 characters) to be sent as URL
encoded data.
If there were too many name/value pairs,
some of them would be clipped and data would get lost.
Further, since the information was sent
as part of the URL, the user could see all of that data. On the
one hand, that made URL's look really ugly and scary. On the
other hand, it meant that the user got to see all of the inner
workings of your CGI input.
This all changed with the development
of HTTP/1.0.