A funny tweet by Twitter chief executive Ev Williams.
Though talk of Twitter's lack of coherent business plan has died down in recent months (there are more important things going on in Silicon Valley -- like people losing their jobs and their shirts on stock losses), it's still out there.
Twitter has succeeded in getting the user base. Now it's going mainstream. One way or another someone will figure out a way to make Twitter a viable business, whether it's Twitter itself or a larger company that uses it as a piece of a larger pie.