my best feature in Google is Google search engine because it will be very fast and it will give us best results than any search engine.and it will also help us to know more information about any thing we want it also able to keep tough with all social networking sites.
Gmail is the one of the best service provided by Google, as i am using it since 5 years. I've never worried about replacing it with another email service provider. With this, you can understand how reliable and useful and best email service it is.
i just love google...every thing about google....(i have a website so i have to love google and hope they see this post... and increase my site's SERP )
i love -
google keyword tool