This is an old revision of the document!
As of version 22.214.171.124, download the tar file from Skype and install it in your $HOME (on CentOS 6) that way. The RPM doesn't work out of the box; maybe it will work with hacking.
Then just make a desktop or panel launcher and call it to the executable you just installed. Icons are also included (96×96 seems to work well).