Adam Bissonnette

This is a simple plugin to disable the back button: [dbb /].
This is optimally used for surveys or funnels that you do not want people backing out of. It prevents the back button from being used by employing a small script that quickly replaces the location context of the page and beffudles the browser.
Redux Option panel included allows you to enable this functionality sitewide as well as disable it for logged in users.

Disable Back Button

Plugin to disable a browsers back button.

TrackToAct

TrackToAct VisiLeads is a lead generating plugin that lets you turn website visitors into contacts. This plugin adds TrackToAct VisiLeads smart sensor code on your pages. You simply enter tracking code and VisiLeads does the rest including activating the Autosuggest feature to increase conversions on existing web forms. See http://tracktoact.com/ for more info.

Disable Back Button vs TrackToAct