You might encounter a situation where you need to Post to a web page and read it’s response.
Here’s a function that uses System.Net.HttpWebRequest and System.Net.HttpWebResponse to do just that.

”Usage’ Dim xmlDoc As Xml.XmlDocument’ xmlDoc.Load(MakeHttpRequest(”request=listPersons&filter=last(a*)”,” [...]

JavaScript is one of those technologies that you can use for years knowing only very little about it.  Do you know what the following <script> block will do?  Post your guess as a comment before you test it out!
<script>
(function() { [...]