It's ok but on peoples' profiles, they can attach their Skype name
so people can contact them that way (you know those icons like email, PM, Facebook, etc.)
but since some people don't personalise their profiles that much, a thread wouldn't hurt.
Just some caution: stay safe!
I don't have a Skype though.
Not that into chatting.
"Sometimes you gotta run before you can walk." - Tony Stark, Iron Man.