You may want to reframe your category based on use. This would solve the "what's the difference between news & a blog" and "is a forum just an old social networ

You may want to reframe your category based on use. This would solve the "what's the difference between news & a blog" and "is a forum just an old social network?" problems You could use categories like: Content Generation – One-Way – Text (blogs and things) Content Generation – One-Way – Mixed Media (archive.org) Content Generation – Interactive – Graphic (Instagram and Flickr) Content Generation – Interactive – Text (forum, twitter, facebook, chat, wiki) Products & Services – One-Way – Corporate (like a big company’s homepage. Sells, but isn’t a store) Products & Services – One-Way – Single Vendor (web store with single vendor) Products & Services – One-Way – Digital Consumption (Netflix, hulu) Products & Services – Interactive – Marketplace (craigslist, ebay, dating sites) Web Infrastructure – One-Way – Search & Retrieval (search engines, research databases) Web Infrastructure – Interactive – APIs