Yahoo places my client sites into the index within 3 days of "Slurping". I've seen Google do the same IF the page or site in question has a (and I hate to say it) High PR.

Is the yahoo slurp ignoring headings? It has been crawling my site recently and it seems like it is ignoring (or penalizing) keywords found in headings even though those keywords were in the title, description and keywords list, along with being the main subject of the page. If so, should I use my robots.txt in order to send Yahoo slurp to pages where those headings would be replaced by normal text in bold?