Analyzer allows you to filter out requests by request type.
GET: a standard request for most pages. Any variables appear on the query string.
POST: a submitted form where the browser sends the variables and values to the server in the request header instead of on the URL. If the site uses a secure connection via SSL, the browser will encrypt the variables and values before sending.
HEAD: With a HEAD request, a server returns only the headers of a resource, rather than the resource itself. The browser does this to find out the Content-Type or Last-Modified date of a document without downloading the document. The browser can check to see if a cached document is up to date this way.