Yahoo! Style Guide does not change AP Stylebook's judgement on numbers. However, they do say certain language rules are outdated (Old "rules" that no longer apply, pg. 348), including:
• Never split an infinitive
• Never end a sentence with a preposition
• Never start a sentence with a conjunction
I guess we'll have to wait for someone with an ever larger language/style gavel to get rid of writing out numbers 0-9. Maybe that's living on the edge...