Less about the tech, I think basically anything would work. I think from the start I would go with 300 characters, and allow edit with a button that has an aud

Less about the tech, I think basically anything would work. I think from the start I would go with 300 characters, and allow edit with a button that has an audit log of all edits. I think a nice approach would be to be mobile first on my end, ios/android app and expose a nice api for people to build their own frontends. The only downside of that is how do you keep a popular frontend from hijacking someones tweets and modifying the text. What I do not have an answer for is, how do you handle the comments, to me, they are generally more interesting than the tweet itself, so how does one get those front and center.