SEO101.CO.UK for search engines are still a must have for you website seo but which ones? As everyone knows a must have is a fully compatible website for Google which is the number one search engine. Don't forget that Microsoft is making great gains as well and although it is 38% less popular than Google it is catching very fast with Bing the most attractive search engine i have ever seen. Before Microsoft and Google the number one search engine was Yahoo so for my top 3 search engines are Google, Bing and Yahoo."