I have a site which got a severe inktomi penalty (I will not say why because that is another topic). After doing whatever corrections I thought had any possibility of tripping any kind of spam filters I submitted a review request to inktomi about two weeks ago. I have just got a reply which in effect says that they do not do any reviews. I thought this was an interesting piece of information to share.
What I believe caused it was a site map type page hosted as homepage of another domain. It had some 300 links on the page to the main site pages...they were hosted on the same ip and submitted in the same PFI .. oh well. Both got banned. Second was just a disposable domain .. and was disposed off .. but I never thought it could get the main site banned .. as no other search engine does that afaik :).
I've had 2 sites in the penalty box for well over a year. Some 10 months ago P/T said they'd help get them restored. Countless e-mails to Ink, P/T and church prayer groups has not helped.
Under influence of a good old friend (Jack Daniels) I thought I'd try adding keyword subdomains and submitting them to Ink. For a little over a week those subdomain pages were on top of everything. Then they disappeared. Although the sites are in the index, they're buried deeeeeeeeeep in the bowels.