[bobbygoodlatte]

reverse chronological simply won't work as a default without some constraints. Otherwise the "optimal" strategy for folks trying to game the system would be to just post constantly. Those who post seldom would get very little distribution as they'd be drowned out.

[nmeagent]

It would be nice to be able to force a reverse chronological order as a baseline but on top of that be able to filter by a user-selected threshold value of whatever measure they used to order with the other method. That way you could filter tweets by their purported level of importance while still keeping the order you want.