Do not ignore the Hybrid Search Engines?
Hybrid search engines are search engines that source their resource and find websites to rank from other sources such as directories etc. Some business owners may say that they only want to focus on Google, Google , Google and this is great. First off Google is a hybrid search engine, lets get that out the way.
As a hybrid search engine is sources its pages to index from all other directories, search engines in fact anywhere it is spiders can find them. Therefore, it should be self explanatory as to why you would be wise to consider all search engines, all directories and so on for listing if you want to be listed well on Google.
No. Well if you are listed on all the search engines, directories and websites that Google searches for a category or keyword that you are marketing your site for then Google will see your website as more relevant within those keywords. It doesnt guarantee results but it will sure help.