Ekiga is open source, using the GPL. Skype is a proprietary protocol. Plain old telephone service is at least an open standard. It doesn't bug me, because with

Ekiga is open source, using the GPL. Skype is a proprietary protocol. Plain old telephone service is at least an open standard. It doesn't bug me, because without people pushing as hard for freedom as RMS has, we'd wouldn't have what we have today.