Historically, its been a major hassle for our team to import our multi-module Maven project into Eclipse given all the Flex, WTP, and GWT stuff in there. We were recently think
It is now officially part of the Eclipse project. It is bundled with the Eclipse.org Java builds. The previous means of installing the plugin is essentially obsolete. It can now be installed via the Indigo update site under "Collaboration -> m2e".
To import maven projects in to Eclipse simply use the same "File -> Import... -> Maven -> Existing Maven Project"