There was a nice article in TechRepublic today http://www.techrepublic.com/blog/project-management/take-your-project-management-application-open-source-with-projectlibre/5052    You can comment on it and help promote ProjectLibre also using Twitter, Linkedin and Facebook.  The viral community is really helping get the word out.  You can use @ProjectLibre and alternative to  @MsftProject as targets along with @PMInstitute to also target the Project Management Institute.