So a while ago we played a few sessions of Hero Quest using Vassal and Roll20. The games tapered off with availability and stuff but I've had numerous people say about running a dungeon crawl again so I figure we can give it a go.
I would propose that the best way to do it is to have a regular 'board game' day - weekly, fortnightly, etc - and just play with whoever is around at the agreed time. Thus the number of players may vary from week to week.
So let me know if you're interested and I'll add your name: