The affiliate space is getting more sophisticated and complex, according to the findings of the AffStat 2006 Report, an annual study examining the state of the affiliate marketing industry.

Released earlier this year by Shawn Collins Consulting, the survey polled nearly 200 affiliate managers from a cross section of the industry on their overall statistics, as well as a number of issues about their affiliate marketing channels, such as staffing, recruiting and management.

Of those surveyed, 77 percent were pay-per-sale, 19 percent pay-per-lead and 4 percent bounty affiliate programs, which is almost exactly in line with the report’s 2005 breakout of how companies paid out commissions.

Over the last year, however, the size of pay-per-sale programs seems to have shifted. The latest report shows an increase in the number of affiliates in the midrange, with 23 percent of this year’s respondents reporting 5,001 to 10,000 affiliates compared to 13 percent a year ago, yet 18 percent said they had too many affiliates to manage effectively.

The trend toward smaller programs is also on the rise. A year ago, 16 percent of respondents had between 2,001 and 5,000 affiliates. The latest figure jumped 7 percent for 2006. Last year, however, 26 percent of respondents had 5,000 or more affiliates and rose just 3 percent for 2006.

Part of moving to small programs is that merchants are giving more scrutiny to the affiliate approval process. And while 17 percent still approve affiliates manually, that is down from 23 percent for the previous year.

Another interesting finding from the survey: Nearly two-thirds of in-house affiliate managers earn $40,000 to $80,000 a year. In the pay-per-sale programs, 71 percent had dedicated affiliate managers; 24 percent had fewer than 500 affiliates; 22 percent had 501 to 2,000 affiliates; 23 percent had between 2,001 and 5,000 affiliates; 15 percent had 5,001 to 10,000; and 14 percent had more than 10,000 affiliates.

Commission Junction continued to lead the pack when it came to which affiliate networks, solution providers or software solutions were being used to track affiliate programs. CJ had 31 percent of the total survey respondents, up from 26 percent in 2005. Some of that gain is likely from Be Free, which is owned by Commission Junction. Be Free dropped 2 percent to comprise 6 percent of this year’s total for respondents.

The use of homegrown tracking solutions rose to 22 percent from 17 percent in 2005. LinkShare moved up 2 percent from last year, to account for 11 percent in 2006. Performics also gained some ground; up to 3 percent from 2 percent in 2005, while ShareASale.com inched up 1 percent to reach 6 percent overall for 2006.

Still, some lost ground. My Affiliate Program//KowaBunga dropped to 8 percent from 13 percent for 2005. Direct Track dipped to 8 percent from 9 percent in 2005, while the response for “other” dipped to 5 percent from 9 percent in 2005.

There was virtually no change in attitude from 2005 to 2006 in responses to the question, “Do you permit your affiliates to bid on your trademark name in pay-per-click search engines?” Fifty-nine percent responded no; 29 percent said yes; 7 percent said yes, but with restrictions; and 5 percent did not know.

As for blogging, of those surveyed, 21 percent had a blog, compared to 15 percent last year.

And the biggest challenge for affiliate marketing for 2006, according to the report, continues to be recruiting new affiliates. This year 31 percent cited it as the largest challenge, compared with 24 percent in 2005.

The entire report can be found at http://www.affstat.com/products.shtml.