Ah, the ever-elusive SMB market (small and medium-sized businesses). For the last several years media companies have been tripping over themselves trying to get their share of advertising dollars from SMBs, but it’s difficult because such dollars are very finite (particularly compared with media spending from larger enterprises). Now, The New York Times and AdReady want to make it easier for small businessess to get their messages online. On Tuesday they announced the debut of Self-Service Advertising, an online display advertising site that enables small businesses to create and manage ad campaigns on NYTimes.com. The service can cater to advertisers with budgets of less than $10,000 per campaign.