Use Customize Google to improve ur Google Experience.
CustomizeGoogle is a Firefox extension that allows you to add or remove elements from Google Pages. Using this you can remove unwanted information like ads and spam. All features are optional and can be easily configured from the options menu.
This is really a very useful Firefox extension and makes Google more User Friendly.
BTW it doesnt cost anything. CustomizeGoogle is free Software, released under the GPL license.
Happy Browsing with CustomizeGoogle!!!