While browsing i stumbled upon a awesome site where you can just enter the site name and it give you a year by year month by month evolution of that site, as all the pages are archived you can always have a look at the pages
Description on site : Browse through 85 billion web pages archived from 1996 to a few months ago. To start surfing the Wayback, type in the web address of a site or page where you would like to start, and press enter. Then select from the archived dates available. The resulting pages point to other archived pages at as close a date as possible
Worth a look, i tried for yahoo and microsoft and results were amazing
WayBack Machine : *www.archive.org/web/web.php
Description on site : Browse through 85 billion web pages archived from 1996 to a few months ago. To start surfing the Wayback, type in the web address of a site or page where you would like to start, and press enter. Then select from the archived dates available. The resulting pages point to other archived pages at as close a date as possible
Worth a look, i tried for yahoo and microsoft and results were amazing
WayBack Machine : *www.archive.org/web/web.php