When it comes to Ajax what are the most common things you do?

1)  Avoid browser cache for GET requests.  

2) Hit the server wit that ‘special’ javascript and populate single/multiple div tags.

3)  Get data as XML/JSON and parse the data  to populate the html page

4) Populate the data in a new Tab instead of a div.

If you really want to know the top 5 patterns that any AJAX user would be falling under (along with code snippets), here is the page from ibm.com.

for-ajax-requests/

http://www-128.ibm.com/developerworks/xml/library/x-ajaxxml2/index.html