Would you pay to belong to an ad-free social network? Dalton Caldwell, mastermind behind App.net, akin to an ad-free Facebook or ad-free Twitter, thinks you just might. While he doesn’t presume that App.net will score the huge user-base of Twitter or Facebook, he does think that he will amass enough of a following that the $50 per person annual fee, coupled with the an ad-free and developer-friendly platform, will build a sustainable network that instills trust among both users and developers.

Even though Twitter added location-based information services (“Twitter with Location”) to Twitter a few months ago, Twitter is only just now advising Twitter users that they can opt in to the new Twitter Location feature (it’s turned off by default, so you don’t have to opt out of Twitter with Location). Here’s how to use – and why you should, or shouldn’t use – Twitter’s Location based Tweet information.

AT and T has taken the unusual step of publicly admitting that they can’t handle the amount of data that their smartphone (mostly iPhone) using customers are using, and have indicated that they are going to try to “educate customers about what represents a megabyte of data.” And then they are going to start penalizing “heavy users.” With so many Apple iPhone complaints about lost calls, dropped calls, and poor coverage and other iPhone problems, it’s about time that they did something, although we’re not sure that cajoling, educating, and threatening users is the right ‘something’.

Is TMobile down? It sure is! Countless T-Mobile customers were left without either cell phone or data network services today, as the T Mobile network went down around the United States.

The High Court in the UK took the unusual step last week of allowing service of a court order on Twitter and, perhaps even more unusually, it worked! The order required that an anonymous defendant cease posing on Twitter as Donal Blaney, the blogger behind Blaney’s Blarney, and abandon the imposter account. The imposter account, using the monicker “Blaneysblarney”, looked identical to the Twitter account under which Donal Blaney actually posts, at “Donal_Blaney”.

Countless thousands across the country are without service this Labor Day Weekend as the Tmobile 3G and Edge data network which services the G1 Android phone went down, and remains down as of the time of this writing.

It’s official: Biz Stone, co-founder of Twitter, has announced that Twitter is gearing up to start charging businesses for business use of Twitter through a premium Twitter service.