There have been a few games of 7th Sea on Elliquiy, but it seems a rare one on here. I agree with the idea of advertising for a GM, and if someone did start up a new game of it, other people might find a game they'd enjoy too. I know there tend to be a number of games of it on RPOL.net at any given time, though you may not wish to look off-site.
I GM'd 7th Sea for 4 or 5 years off-site, and played in other games of it as well (including tabletop). I still have a game of it that I was GMing on hiatus, but I'm not sure if I will be starting it up again. I got burned out from running it over time without much of a break, but it's still one of my favourite games.