I've signed up for M4L
the software works much better than any other miner for a newb. download and run, enter a user name and your done. you'll need to have second life already installed, and find a link in SL world to activate.
you get SL dollars direct to your account. Later you can exchange your $L or do what you like with them.
find me in SL I'll send you a teleport invite that will take you direct to me so you can click the link.
also you get referral payouts, which no other miner does.
you can run the miner on multiple machines, you could leave the machines un-attended an let it mine, only thing someone could do is change the user name, and it stops mining for you, but you they can't take what you've already mined, there is a payout button, and you can access it from any machine, and it pays out from all your mining, except amounts under $L1.