So neat, but wow is that not the best way of doing something. It's good publicity, but you immediately cut the amount of people who can contact you down to just programmers. Much better to have a basic site with a phone number, email and contact form.

I wrote that and then googled them, to see what they had (http://rawfunkmaharishi.uk/book-the-band/). Once again, asking to be contacted through facebook and twitter isn't really ideal, a contact form would be a welcome addition to this page.