But there is a decrease in the traffic of both sites. The only real way of comparing is using GA stats, anything else is useless. Matt Cutts comment tends to point to no. Google trends is a competitor to Alexa, they most likely have more toolbars installed so the data is probably more accurate, so you can monitor the performance of your site.
Monitoring your site performance is a good way to understand more about your traffic. This is useless! For 80% of the sites I tried, Trend couldn't find any data.. Even sites that have been around for years and are getting hundreds of thousands of hits each month. Google Trends receives its data from all Google search queries, not just from the Google Toolbar. Secondly, Google Trends measures search volume. However, Alexa, Compete.com, and Quantcast all measure web traffic.
These are two completely different stats that should be used in conjunction with each other to make well rounded analysis. Alexa is dying and Amazon seems like doesn’t care. Amazon doesn’t show their own rank. So, we can use Google to see their traffic. Alexa developers should work more to build more relationships with other companies to track statistics when people use other than Alexa toolbars.
