Think of it as Groupon for businesses. OfficeArrow sends a deal-of-the-day e-mail to subscribers, offering discounts of 50 percent to 90 percent on business products and services. Recent deals include an 8GB Kensington USB drive for $14.50, a 50 percent discount, and a $50 coupon for HP toner cartridges for just $25. The e-mail subscription is free. OfficeArrow also offers paid memberships, including one that provides access to thousands of products in the site's discount club store for $99 a year. You can feature your own product or service as a daily deal in exchange for a percentage of the sales over 24 hours.