Inktomi Paid Inclusion Program You can also submit your site to Lycos, FAST (AllTheWeb), AltaVista, WhatuSeek, Yahoo Europe and other search engine page submission programs.

Inktomi used to power HotBot, MSN and was recently purchased by Yahoo.
Inktomi Paid for Inclusion Program was recently replaced by Yahoo / Overture SiteMatch.
Site Match is now powering Yahoo.

MediaDNA has gone out of business, but you can read some past info about them below:
MediaDNA press release on Inktomi deal
eLuminator™ 2.6 Enhances The Ability To Intelligently Identify And Promote Valuable Content On The Internet
An article about MediaDNA and its partnership with Inktomi
An Article about Yahoo Site Match

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