I prefer to use Guru's SafePay Escrow to receive payment for work done. Payments need to be made by Check, E-check, or Wire Transfer Funds.
I am accustomed to communicating with clients via email, Skype, and telephone. Typically each project begins with a phone call so we can "meet" one another and discuss the specifics of the project. After that, emails and an occasional Instant Message are employed. Additional phonecalls are sometimes necessary if the details of a project are too involved to articulate via email.
I am always available during "regular" working hours, and often work late into the evening. I always try to stay in close communication through the life of the project so you are always informed.