Virtual PBX system lets you have a professional business telephone service for a low monthly fee. "Follow-me" technology rings multiple phones at once and voicemail messages are delivered to your email inbox as a .WAV file.
Voice and Fax on Demand service. We use this service to provide recorded messages and fax infromation packages on each of our listings. The service even sends a letter to all callers from the previous week if they called from a land line.
I like to call this one Ebay for contract design work. Find graphic artists, technical writers, web designers, and more from all over the world. Just post your project and get bids right away; you won't believe the prices. We found the vendor who redesigned our website using this service.
iPrint.com, VistaPrint.com, Click2Mail.com
Affordable printing for business cards, letterhead, postcards, etc. The latter two also offer direct mail fulfillment. You simply upload the document and the mailing list and they print, stamp, and mail your mass marketing pieces.
Dirt cheap prices on glossy brochures, self mailers, and postcards. I recently found an even cheaper vendor for a self-mailer, but the order is in process and I can't vouch for the quality yet.