Google is no longer the only search engine people use. Sure, it’s the big go to search engine for generic searching, but we frequently use a myriad of specialized search engines to find the niche category search results we seek.

For example:

Amazon is a search engine for shopping.
EBay is a search engine for second hand bargains.
Pinterest is a search engine for decorating and idea generation.
Etsy is a search engine for handmade crafts.
Facebook is a search engine for friends & family.
Twitter is a search engine for topical commentary.
YouTube is a search engine for video content.

It's still critical to optimize your website for Google, but it' equally as important to optimize your presence across the web.