Perhaps that is the lesson to be learned? That technology with limits... scales?
If you want to "do social", do it for small groups. Nobody really has 40 000 friends, so why bother with the use-case that is literally only used by advertising companies?
I don't think the final question is realistic. I have 20K followers (not huge, but far beyond who I could realistically ever "know") and get huge value from it as an individual, not as a business. It would be so boring (to me) to only be able to talk to people one knows closely.
There are numerous non-company non-celebs-in-the-Hollywood-sense-of-the-word people who have huge followings on Twitter who get a lot of value from that and who their followers also appreciate: people like DHH, John Carmack, Marco, Sam Altman, Scoble..
There is a definite space between "people you know personally" and "blast ads to 2 million customers" in social and Twitter fills it really well.
All "social media" services are fundamentally "RSS feeds for humans". It's the same concept, with an easier interfaces and discovery mechanisms, and within a walled garden.
RSS lacks one-click follow, recommendations, favorites, push of new updates, native replies, and uniformity of message size, and if you could sweep those things under the rug, Twitter wouldn't be as large as it is.
RSS is fine for plumbing and pros but has not evolved into anything resembling a user-friendly system.
> * RSS lacks one-click follow, recommendations, favorites, push of new updates, native replies, and uniformity of message size, and if you could sweep those things under the rug, Twitter wouldn't be as large as it is.*
Twitter has way more features than RSS, but do people really use "favorites" that often? The tweets I "fav'd" I don't really go back and check later, or maybe I'm not the targeted demographic
If you want to "do social", do it for small groups. Nobody really has 40 000 friends, so why bother with the use-case that is literally only used by advertising companies?