Small and Medium Business (SMB) IT Spending Worldwide

IDC, considered the premier global market intelligence firm, also covers the SMB market.  Here's what they predict (2010):
In the next 12-18 months, IDC expects a variety of evolutionary and revolutionary changes to take place in the small and medium-sized business (SMB) technology market that will drive opportunities on both a worldwide and regional basis. Based on this, and with in-depth knowledge of key technology areas where SMB offerings are dominant, IDC has expanded its research and consulting capabilities around understanding the SMB opportunity.
Learn more here.  Be sure to also check out:  Exploring the Global SMB Marketplace