Most interesting approach I've seen was Mobile Industry Review: http://paidcontent.co.uk/article/419-mobile-indsutry-review-turns-private-research-firm/ http://

Most interesting approach I've seen was Mobile Industry Review: http://paidcontent.co.uk/article/419-mobile-indsutry-review-turns-private-research-firm/ http://paidcontent.co.uk/article/419-mobile-indsutry-review-... A free blog that turned into a private research firm for companies.