Board Thread:Suggestion and Critics/@comment-25090105-20150421181926/@comment-25090105-20150424023710

To name one, the Wikipedia: Hyphen#Compound_modifiers

Look for a paragraph which starts with "Hyphens are usually used to connect numbers and ..."

Why not "online video streaming"? Online is an adjective. (edit: and can be an adverb, according to an online translator)