I didn't read the article but I'll tell you how Twitter can become profitable, and I feel somewhat qualified to say this, given Twitter (and others) have emulat

I didn't read the article but I'll tell you how Twitter can become profitable, and I feel somewhat qualified to say this, given Twitter (and others) have emulated my own site (http://twitya.com http://twitya.com) in more ways than one over the last couple years. Search advertising: so I run a search within the web client.. why isn't there advertising on the right hand side? Rev share with Tweeters: the tweeters bring traffic to Twitter, so how and when will they be rewarded beyond just having free usage of the system? Twitter should have buy-a-tweet and offer rev-share to those who select to use it. The key is relevance - they need to insert tweets that people will want to read. The tweets can even go in the right column. Or, they can go in stream, immediately under the tweets from the users who have opted-in. If the viewer doesn't like the ad tweet, they can unfollow that account of the tweet, to which the ad belongs. The web interface can limit the number of ad tweets a timeline has seen over the course of a day. -- so accounts get a new metric beyond followers, following, listed, created, etc -- "ad intensity" based on some ratio of ad tweets/normal tweets/time. -- additionally, you can have power users pay a fee to not see the ad tweets, or some percentage of them, and that becomes another metric in the API for a user: "% ads being blocked." Then there can be some interesting configurations options, like trading ad-insertions for ad-blocking. Power client: why doesn't Twitter have power-client version of their web interface, with multi-account capability? OK, some people will get it for free elsewhere, but not everyone.