New in version 0.6.
Microsoft Translator (also known as Bing Translator) is a free service for machine translation (MT). Familiarise yourself with the Microsoft Service Agreement.
The Virtaal plugin provides the output of Microsoft Translator as suggestions.
The plugin queries a web service over the Internet, and suggestions might therefore take a moment before they are displayed. Also keep in mind that your source text is sent unencrypted over the Internet, and therefore no confidential translation should be done using this plug-in.
Remember that the suggestions from the Microsoft Translator plugin are unreviewed machine-generated translations, that could be wrong, inaccurate, or flawed in some other way. It is meant as a way to help you increase your productivity, not to substitute the expertise of a human translator.