We've had a debate on our SEW Forums recently (see Matt Cutts Comments On Reputable Sites & Link Selling) over whether publishers should tag paid links so search engines won't count them. Part of that covered the issue of links where payment isn't so readily visible. Help Us Build a Link Farm, Get an iPod Nano? from Traffick is a case in point. Want to win an iPod Nano from them? Just post some links to them. It's an example of how what may seem to be a clear-cut, black-and-white issue isn't. Those who forthrightly pay for links potentially might not get those links counted, but do a savvy rub-our-back giveaway and that might fly under the radar?
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.