[maxfurman]

Pay to promote tweets, perhaps? Kind of like the situation for brands on Facebook now, where "organic" reach is strictly controlled to encourage paid promotion, but applied to all users?

It might work if Twitter didn't have a billion dollars in debt payments to make every year, on top of their fixed costs.

[rsynnott]

... That's basically just what Twitter ads are anyway, tho. Twitter ads generally take the form of labelled "promoted tweets".