I have a multipage form which works largely by posting the form details in query strings to the url. I know this isn't ideal and i've already changed it.
However, what was happening is that google was caching results such as
mysite.com/myform?var=var&var2=var2&var3=var3
Where the var(s) were populated with form submitted form details.
Any idea why/how this is happening? Thanks in anticpation.