people may be viewing your image on another site. the views are just for fun. the sale is the goal. you might not have been seen in the search, but on some blog. it might have even gone straight to the sales page. that would explain the lack of hits.
ok that's explains it. you turned your pinterest button off. people will pin the product page, where the pin thing isn't on. and they pin that instead. you got a sale from a pin, it's the only solution that makes sense. they were never counted at all. which makes me wonder if i should be doing the same thing.
---Mike Savad