I have a group of real life friends who I play with. We have a team of five. We all use Skype to keep in contact whilst we are playing. We normally walk around as a group, loot together, heal each other etc. Ventrillo or Teamspeak is commonly used but we're not in the position to be able to host a server. Skype is good enough to use though, although sometimes the connection is iffy. Maybe you could show some of your friends about DayZ and ask them if they'd like to buy the game? It is much more fun playing with friends, I played for about 3 days by myself and already grew very bored of the game. But I've now been playing for about 2 weeks with friends and don't plan to stop.