I've got a spare mobile and was wondering if it is possible to mine altcoins with it, and if there's any way it can turn a profit (perhaps by mining coins I expect to increase in value). So is this doable?

If you could choose one that would implement Bitcoin payments, what would it be? I'd say Amazon.

So, I'm new and I need to wait 6 minutes between each post. How long until that restriction is lifted? I'm sure it's listed somewhere, but I've searched and can not find it.

What coins that you expect to rise in 2018 have masternodes? List them here.