This is terribly stupid. Along with the fact that the participation ratio of anything tends to look like that (web forums are close to completely useless! HN is close to completely useless!), don't you have to be a member of twitter to get your own custom following feed? A twitter account's value is not simply the ability to produce, it's a customization hook too. At least, I can't figure out how to follow two people from Twitter's home page without logging in.

Yes, if you make up a terrible definition of "useful", some obviously useful things will turn out not useful! Hooray for you! ... simply fiddling with semantics like that is just a way to try to look important, not to say anything actually important.