You guys have many good suggestions and leads.
Lately, I've been seeing more compliments being paid in guest books to clubs, businesses, organizations etc, and at the same time, the complimentor leaves a line or 2 of info about themselves and even email/website links.
The advantage here is that it don't cost anything, you can do it at your convenience, day ot night, and there are many viewers to the book. You never know who's reading the book. The info could fall into the hands of someone on the entertainment committee somewhere.
Its not much work for the potential to increase exposure and maybe snag a few referrals. A bigger advantage is having your own website. Your samples will handle the auditioning and the average viewer(s) to that guest book might start demanding CDs from you!
(I can dream big, can't I)