Inspired by the Postable and I Make Postable websites, the widget simply converts some special characters to HTML entities. It's useful if you want to post code snipplets to a blog, forum or publish them on a website.
Unlike the online converters, the widget does not require any server-side computation (i.e.: your code is not sent to some external server). Thus no internet connection is required.
In the confiuguration panel, you can set which special chars you want to convert: