Entrepreneur/blogger/geek-genius, Dalton Caldwell has raised $700,000 towards App.net, a company to challenge ad based social networks. Where Facebook and Twitter must cater their services to the advertisers who fuel their business model, Caldwell wants to build a community with only users in mind.
Like Github, an adored software service that charges for premium options, App.net will ask you to hand over some cash. The upshot is that the service/platform/community will never have to answer to advertisers. No banner ads, no privacy concerns, no promoted tweets from Mitt Romney.