Planning an Event?
If you are planning an event and looking for other services like a DJ or photographer there are a ton of websites that have lists of businesses that service the event industry (i.e. http://www.partyblast.com).
Another option would be to call or email someone you trust (like me!) an get referrals. Each year I work with tons of DJ’s, Photographer’s, Juggler’s, Artists, Videographers, etc and I have a some people that I would recommend!
Personally my One Man Side Show gets a lot of work through word of mouth referrals from DJ’s, Photographers, and other people in the event industry, so don’t be afraid to ask me for a referral for another service!