By Dave Winer on Monday, March 12, 2012 at 6:59 PM.
First, congrats to the team at Posterous for two things.
1. Posterous is an excellent software product.
2. They are joining a team at Twitter that will likely make them rich.
For a software entrepreneur these are the two really major things, imho. The feeling of a accomplishment that comes from doing good work, and the prospect of making a shitload of money.
To users, a reminder that nothing is forever, but services you pay for will likely last longer. Eventually this will happen with every free service we use. This isn't the only way they wind down. And it happens a lot.