Google updates the Google algorithm often. The recent Penguin algorithm update targeted Link Spam.
Last year Etsy.com was penalized by Google for Link Spam generated by Etsy sellers. Either the recent Penguin Update or a new Link Spam penalty from Google has resulted in a drop of views for some Etsy sellers.
It is easy to find backlink or link building deals that sound too good to be true (such as, 5,000 backlinks for $50.00). These deals ARE too good to be true and are Link Spam that hurt not only the shop owners who buy into these deals but also hurt many other Etsy sellers.
Etsy did eventually recover from the Link Spam penalty last year and will recover from this one but it will probably take several months. Google is very slow in removing penalties.
These Google penalties will stop if Etsy sellers will stop buying into these nasty spammy Backlink deals.
You can read more about the Google Penguin algorithm updates here:
http://searchengineland.com/library/google/google-penguin-updateThe recent changes to Etsy's Front Page would have no effect on views and sales. This change and Google's algorithm updates or Link Spam penalty happened around the same time.