Do not type in all caps. Do not include a list of keywords. Do not write a sales pitch.
The description should be in English and in coherent sentence form. Do not include superlatives or a sales pitch. Do not submit a list of keywords. Do not use unnecessary capitalisation, or include HTML tags.
Submit to only ONE category. Submit to the best category possible. If you cannot find the proper category, first look elsewhere in the ODP. If you still cannot locate an appropriate category, submit the site to the best category possible.