KJYe.Name

In 2013, we had a client re-branded their website & domain, and saw a huge decrease of approximately 55% of their organic traffic. One of the main structure changed to the website was heavily JS usage. Now thinking back, even though Google suggested over the years that JS generated contents are crawled, this may have been one of the major causes of our client's decline in Organic Traffic during re-branding.

Althought this is stricly a "infinite scroll" discussion, but suggests that JS generated contents are not 100% crawlable.

Google’s Martin Splitt Explains Why Infinite Scroll Causes SEO Problems Google’s Martin Splitt once again had to remind SEOs and site owners that Googlebot doesn’t scroll through pages.