“There appears to be a growing trend in the social networking industry. Marketers appear to be targeting sites with smaller, niche memberships more so now than ever before.
According to eMarketer, last year advertisers spent $920 million on advertising within social networks – and of that amount, 8.2 percent went to niche networks. This year it is estimated that spending will increase to $2.1 billion, and the take for smaller networks will rise to 10%. This is due to what is perceived as an improved return on investment for an advertiser’s marketing dollar through secondary social channels.”
Read more at mashable.com