Google's Shopping Tour

From Wikipedia: List of acquisitions by Google (here is the same list for Microsoft)

For reference, here is a list with a description for all Google Acquisitions.

The following list is copied from Google Blogoscoped: The Acquisition Price Guide

Company	Acquired by	Price
Skype	Ebay	$2.6 billion
YouTube	Google	$1.65 billion
5% investment in AOL	Google	$1 billion
MySpace	News Corp	$580 million
dMarc Broadcasting	Google	$102 million
Grouper	Sony	$65 million
Flickr	Yahoo	$30-35 million (rumored)
del.icio.us	Yahoo	$30-35 million (rumored)
Bloglines	IAC (Ask)	$25 million (rumored)
Weblogs Inc.	AOL	$25 million (rumored)
Blogger	Google	$20 million (rumored)
Oddpost	Yahoo	$20 million (rumored)
Jumpcut	Yahoo	$15 million (rumored)
LiveJournal	SixApart	$20 million (rumored)
Rojo	SixApart	$10 million (rumored)
Picasa	Google	Under $5 million (rumored)
MeasureMap	Google	Under $5 million (rumored)
2.6% ownership of Baidu	Google	$5 million
weblogs.com	Verisign	$2 million
Writely	Google	Around $2 million (rumored)
Dodgeball	Google	Around $1 million (rumored)
Upcoming.org	Yahoo	Around $1 million (rumored)
WebJay	Yahoo	Around $1 million (rumored)
Urchin	Google	$???
Keyhole	Google	$???
Deja News	Google	$???

BTW, Google sold their 2.6 % share in Chinese search engine Baidu for USD 60 million (source).