Very common for me.
Also common are VOIP conference lines where everybody dials in.
When someone says "let's Skype" in my world, they either mean Skype-to-Skype (which is implicit if they are in your Skype contacts) or Skype-to-VOIP using one of our VoSky appliances that's tied into our PBXes. The verb "to call" is almost meaningless these days.
My wife does. Oprah's been skyping in and out of viewer homes for months.
Also, two Galaxy S phones were released in mid-July, less than one month ago.
regardless, though, i think my original point still stands. skype hasn't been stagnant, they're making some moves.
Serious question: any idea how? Everything I've read says it's limited to Verizon handsets, even when trying to install the .apk manually. I'd love to have Skype on my Vibrant.