This module extends the Webform module to easily allow the creation of a webform that feeds to your Salesforce.com Account. It utilizes the Salesforce's Web-to-Lead.
This module is a low level ESI handling API for module developers and a besic block integration for site admins.
It handles ESI tag build and different levels of caching policy. It is able to cache blocks itself using complex cache identifiers computed using series of variables.
It provides a downgrade mode that is able to load all ESI elements using a simple and efficient piece of JavaScript if the site is not behind an ESI gate.
You can use this module safely without any ESI gate if you need to provide comprenhensible and fine tunable block AJAX loading/caching mecanism.