Salesforce Social is an integration Suite for WordPress by pete_ryan.
Web-to-Lead Form for Salesforce CRM. Send Leads to Salesforce CRM. Generate a raw HTML form using your Salesforce CRM account and paste it into the Admin Panel of this plugin. Styling, form validation and anti-spam captcha can be added. The form can be included anywhere in your WordPress/Buddypress site by using the short code [webtolead]. The form is fully customisable and even deals with with custom fields in the Salesforce Lead object.
REST API to allow complex integrations with WordPress/Buddypress. Allows user admin from an external application.
Download and info: http://wordpress.org/extend/plugins/salesforce-social/