I enjoy pinning items, typically a few every other day usually from my teams or from my Activity stream, but with any form of marketing, if it's not interesting to you, you're not going to do it or your heart won't be in it and it will show. There are a ton of ways to market your Etsy shop: try out different ways until you find some you like and then go for it.
If you're just posting links to your shop on any venue, it's not going to bring in customers, and with Google's paid searches, it's not going to do much for being found in the search engine either.