Fluctuations in search results happen all the time; the web is constantly evolving and so are the Google search results. Google algorithms are constantly evolving.

When an affiliate has reduced search traffic or loses ranking, two of the 1st things they think of are that either duplicate content issues or affiliate links are responsible.

The Official Google Webmaster blog today goes into those 2 issues as well as architectural issues that can have an effect on traffic and rankings.

Traffic drops and site architecture issues

Myth number 1: Duplicate content causes drops in traffic!
Webmasters often wonder if the duplicates on their site can have a negative effect on their site’s traffic. As mentioned in our guidelines, unless this duplication is intended to manipulate Google and/or users, the duplication is not a violation of our Webmaster Guidelines. The second part of my presentation illustrates in greater detail how to deal with duplicate content using canonicalization.

Myth number 2: Affiliate programs cause drops in traffic!
Original and compelling content is crucial for a good user experience. If your website participates in affiliate programs, it’s essential to consider whether the same content is available in many other places on the web. Affiliate sites with little or no original and compelling content are not likely to rank well in Google search results, but including affiliate links within the context of original and compelling content isn’t in itself the sort of thing that leads to traffic drops.

Continue reading: Traffic drops and site architecture issues