Inktomi also does free listings. From SearchEngineWatch.com
(http://www.searchenginewatch.com/webmasters/article.php/2167871)
Inktomi is an important crawler-based search engine because it provides “backup” results to the popular MSN Search (see the Search Engine Results Chart for what “backup” results are). It was also recently purchased by Yahoo and so may be providing results to Yahoo in the near future.
As covered with Google, building links is the best way to get listed for free. Unlike Google, Inktomi has no free Add URL page. This doesn’t mean that you can’t get listed, however. Inktomi crawls the web, so if you have links pointing at your web site, you may get included naturally.
What if you aren’t picked up for free? Inktomi has a “paid inclusion” program that will guarantee to add the pages you submit within two days and keep revisiting it on a regular basis for a year. Because of this, for a brand new site, it’s well recommended to use the program. You can quickly get yourself represented in Inktomi for a modest amount.
But there’s no guarantee. My site was indexed (all pages) before but I only paid for inclusion of the homepage. I might try that again.
And last but not least, also PFI doesn’t guarantee you get listed, as some people are experiencing problems with their PFI listings,
read f.e. here http://www.webmasterworld.com/forum1/2356.htm