Campbell, Calif. – May 15, 2007 – Rainmaker Systems, Inc. (NASDAQ: RMKR), a leading provider of sales and marketing solutions combining hosted application software and execution services, today announced that the leading global provider of analytics and decision management technology has selected Rainmaker as exclusive provider for global campaign management services for its worldwide operations.

Rainmaker's on-demand applications and integrated marketing services will be deployed to assist the Client with demand creation, lead management and list development (scoring, cleansing, augmentation, routing), inbound response management, lead-nurturing and distribution services throughout the Client's global footprint.

Utilizing its proprietary LeadWorks™ application, Rainmaker will implement and manage a centralized online marketing database to facilitate the management of all customer and prospect interactions, and to execute and manage integrated marketing campaigns. The program will be deployed in the Americas, EMEA (Europe, Middle East and Africa) and APAC (Asia and Pacific) regions. Support for multiple languages will be provided through Rainmaker's Language-in-a-box application.

Rainmaker will also provide Teleweb Reps to qualify, screen, clean, profile, distribute and engage the Client's global sales teams with feedback on lead quality.

"Rainmaker was awarded this contract because we clearly demonstrated that we're the only vendor with the fully-integrated capability required to centralize this Client's sales needs on a global scale," said Michael Silton, Rainmaker's CEO. "Our unique, fully-integrated combination of hosted technology, data and expertise can be deployed across multiple channels to drive revenue throughout the world."

About Rainmaker
Rainmaker Systems, Inc. delivers sales and marketing solutions, combining hosted application software and execution services designed to drive more revenue for our clients. Our Revenue Delivery Platform^(SM) combines proprietary, on-demand application software and advanced analytics with specialized sales and marketing execution services. Rainmaker clients include large enterprises in a range of industries, including computer hardware and software, telecommunications, and financial services industries. For more information, visit www.rmkr.com or call 800-631-1545.

NOTE: Rainmaker Systems, the Rainmaker logo, Sunset Direct and Contract Renewals Plus are registered with the U.S. Patent and Trademark Office. All other service marks or trademarks are the property of their respective owners.
 
This press release contains forward-looking statements regarding future events. These forward-looking statements are based on information available to Rainmaker as of this date and they assume no obligation to update any such forward-looking statements. These statements are not guarantees of future performance, and actual results could differ materially from current expectations. Among the important factors which could cause actual results to differ materially from those in the forward-looking statements are general market conditions, unfavorable economic conditions, our ability to execute our business strategy, our ability to integrate acquisitions without disruption to our business, the effectiveness of our sales team and approach, our ability to target, analyze and forecast the revenue to be derived from a client and the costs associated with providing services to that client, the date during the course of a calendar year that a new client is acquired, the length of the integration cycle for new clients and the timing of revenues and costs associated therewith, our client concentration given that we are currently dependent on a few significant client relationships, potential competition in the marketplace, the ability to retain and attract employees, market acceptance of our service programs and pricing options, our ability to maintain our existing technology platform and to deploy new technology, our ability to sign new clients and control expenses, the possibility of the discontinuation and/or realignment of some client relationships, and the financial condition of our clients' businesses, and other factors detailed in the Company's filings with the Securities and Exchange Commission, including our filings on Forms 10-K and 10-Q.