I want a list of popular search strings, in English, arranged by category and sub-category. For example:
Tourism -> Accommodation -> Hotels
Tourism -> Transportation -> Car rental
I'd like that list to include 300 keywords (sometimes, it would be a phrase and not a single word). For categories, you can use sites like technorati, digg, [url removed, login to view] and other "what's popular" websites.
Make sure that the list you supply is consistent and spell checked.
The delivery should be in the form of a spread sheet, where under each main category appear the sub categories and under each sub-category appear all search terms.