The Skype provider for Eclipse/ECF Ganymede does not work. It seems a build issue and not a coding issue. We need separate features for Eclipse/ECF on Linux and Eclipse/ECF on Windows. I made an Eclipse/ECF 3.4 Skype on Linux update site. It is available at http://ecf1.osuosl.org/update/2.0Linux/site.xml.
To use Skype with Eclipse Ganymede, first install ECF. Then, go to Help->Software Updates->Available Software->Add Site and put in the above URL for the location.
The following PDF describes how to build this Linux-specific update site.
BuildingSkypeUpdateSite.pdf (1.01 MB)