Dividing your java maven project into sub-modules and sub-projects using m2eclipse

Useful link #1:
http://i-proving.ca/space/Technologies/Maven/Maven+Recipes/Split+Your+Project+Into+Sub-Projects

Useful Screencast #2:
http://www.lordofthejars.com/2012/02/for-everything-i-long-to-do-no-matter.html