I believe I'm the person who originally coined the phrase Skypesos, at least the very first use of it on Flyertalk was in a post that I made.
They're a terribly devalued currency, they are clearly the least useful for obtaining premium class international awards especially if you want more than one seat from the US to Asia. Their website is broken, it often prices awards more expensively than inventory would appear to require. And they don't even bother to publish an award chart for flights between destinations not involving North America.