Why Stop at Google, Yahoo, and Bing?

These may be the biggest three search engines in terms of market share in the United States, but there are still plenty of people using others. For one thing, YouTube is number 2. Not Yahoo or Bing. If you are concerned about simply being found where people are searching, you should have a YouTube presence. That of course means having a video strategy, but that doesn't necessarily mean you have to have a huge video budget.

There are still people using Ask as well. In search industry coverage, it often gets overshadowed by the others, but there are still a lot of people using it. In fact, the Ask Network's market share grew by 6% from December to January. Ask.com's market share grew by 1%. A lot of people search with AOL. AOL's search is powered by Google, but it doesn't always return the same results as Google.
Facebook's search market share grew by 13% in that same period of time. You may not think about Facebook for search as much, but people are spending more and more time on Facebook, and it stands to reason that they'll be conducting more and more searches from Facebook. Granted, Facebook's web search feature is powered by Bing, but that's only a piece of the Facebook Search puzzle. If you don't have a Facebook strategy, you may be missing out on a lot more searches. By the way, did you know that Facebook recently passed Yahoo as the 2nd most visited site (just under Google)?

These are just a few examples. People are searching from a lot more places. Rather than just optimizing for Google, Yahoo, and Bing, perhaps you should think about all of the places where your site/business would make sense when a user searches (consider niche sites as well).