Hello there. CentOS 7 is a fresh and major release, but fear not, Skype works well on it.
As usual, just yum install skype if you have my nux-dextop repo installed or just grab the latest RPM from here http://li.nux.ro/download/nux/dextop/el7/x86_64/ and install it.
Don't be shy and let me know if you encounter any issues - rpm at li.nux.ro !
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