OK lets get started. How does Yahoo return results? Well search results on Yahoo are determined by words that appear within these four areas:
1) category,
2) title,
3) description, and
4) URL. These sites are then sorted by relevance using an automated algorithm.
First up category selection, many people don't realize this but when someone searches for a term(s) on Yahoo its algorithm searches through the category name also, for example visit
www.yahoo.com and you will see the results for a search done on 'Internet marketing articles'. You will see under each listing that these words are highlighted if they are in the name of the category, the top listing has the most occurrences of these words between its title, description, URL and words in the category its in.
You should remember this when submitting to your category, when trying to establish what category you are going to submit to you should do a search for one or two of your keywords and see what categories come up. But which of these categories do you submit to?