RAINMAKER TO EXPAND CHANNEL SERVICE CONTRACT SOLUTION
FOR GLOBAL LEADER IN SECURITY AND INFRASTRUCTURE SOFTWARE CLIENT

Scope of Services Expanded to Include the Entire Mid-Market for
US and Canada Partners Across All Product Lines

Campbell, Calif. – May 16, 2007 – Rainmaker Systems, Inc. (NASDAQ: RMKR), a leading provider of sales and marketing solutions combining hosted application software and execution services, today announced that it will extend and significantly expand its contract with the global leader in security and infrastructure software to provide Web-based software subscription sales and channel support services for all its partners in North America, including Canada.

Based on the successful pilot originally focused on the SMB segment, Rainmaker's program will now cover the entire Mid-Market across all of this Client's major product lines in its expanded scope of services designed to increase software subscription sales and automate the renewal process for the Client's partners and end customers.

Rainmaker's comprehensive, technology-based solution includes a hosted channel partner portal allowing the Client's resellers to view their end-customer install base, manage support contracts, and generate real-time renewal quotes. Rainmaker's solution also includes a partner response center to support the Client's partner inquiries and integrated marketing services aimed at driving end customers to the appropriate channel partner.

The expanded agreement also calls for Rainmaker to provide dedicated Service Sales Representatives to administer and provide sales support to both partners and end-customer

"Because of the tremendous impact of our pilot engagement, our Client has requested that we deploy a significant rollout to a major segment of their business," said Michael Silton, Rainmaker's CEO. "Clearly the market is calling for a more comprehensive solution that enables the Partners' success in what is traditionally known as a highly complex and manual revenue opportunity. Rainmaker's platform is the catalyst in driving to an easier methodology of doing business for this Client's partners and customers. We are pleased that the Client recognizes the value of our unique, fully-integrated combination of hosted technology, data and expertise and has entrusted us with an even larger portion of their business."

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.

CONTACT:
Steve Valenzuela
Chief Financial Officer
Rainmaker Systems, Inc.
(408) 626-2439
steve.valenzuela@rmkr.com
  Todd Kehrli or Jim Byers
Investor Relations
MKR Group, Inc.
(323) 468-2300
rmkr@mkr-group.com