According to a report on the Revolution web site, Aegis paid about $50 million for iProspect.
Here's a list of some other notable acquisitions in the SEM space (it has been a very busy year):
+ 2004...Digital Impact Purchases Marketleap
+ 2004...Doubleclick Acquires Perfomics
+ 2003...aQuantive Acquires Go Toast
Meet Your Favorite Search Engine Watch Contributors
Many of SEW's leading expert contributors will be at ClickZ Live, the new online and digital marketing event kicking off in New York (March 31-April 3). Hear from the likes of: Thom Craver, Josh Braaten, Lisa Barone, Simon Heseltine, Josh McCoy, Lisa Raehsler, Greg Jarboe, Dan Cristo, Joseph Kerschbaum, John Gagnon, Eric Enge and more!