I don't know if I'd add email.

Filtering out the freelancers who don't have a dedicated business line and who aren't reachable by phone is a good service to provide to your clients, and it is a reason I'd use tekbob over any number of your competitors.

There is no excuse not to have a phone number. Get google voice and Skype. As a freelancer you are in the customer service industry, one. Two, your competitors have phone numbers.

I regularly look for people to subcontract work to and I persons's skills or experience are great but if I can't call them and reach them by phone to have a conversation, that is an immense disadvantage when I'm comparing one worker to another.