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When choosing a map - especially a social network map - which do you prefer - pretty or useful? In an ideal world I would take pretty useful, but forced to choose between the two I'll take useful. Here are two social graphs taken from my Twitter following data. -Valdis Krebs, InFlow, Social Network Analysis Expert

A Twitter focused workshop that will teach you "Winning Twitter Strategies from Tim O'Reilly & Experts"

For a service that is remarkably simple, Twitter is often difficult for new users to understand and to quickly turn into something useful. In fact, the simplicity of Twitter can actually be a barrier in the beginning, because there's not much to help a new user get started. So, we've put together this guide, which will help you understand the basic jargon of Twitter, find a good set of Twitter add-ons to streamline and strengthen your Twitter experience, and give you a list of 100 technology experts who are active on Twitter and are worth following.

Twitt(url)y is a service for tracking what URLs people are talking about as they talk about them on Twitter.

Evan Williams and Biz Stone of Twitter Robyn Twomey for TIME ENLARGE + Print Reprints Email Twitter Linkedin Buzz up! (44) Facebook MORE... Add to my: del.icio.us Technorati reddit Google Bookmarks Mixx StumbleUpon Blog this on: TypePad LiveJournal Blogger MySpace The one thing you can say for certain about Twitter is that it makes a terrible first impression. You hear about this new service that lets you send 140-character updates to your "followers," and you think, Why does the world need this, exactly? It's not as if we were all sitting around four years ago scratching our heads and saying, "If only there were a technology that would allow me to send a message to my 50 friends, alerting them in real time about my choice of breakfast cereal." Related Audio Host Katherine Lanpher talks with TIME's Just Fox on stocks vs. bonds and Barbara Kiviat about the housing market's new movement Download | Subscribe Specials The World of Twitter Specials Top 10 Celebrity Twitter Feeds Specials 10 Ways Twitter Will Change American Business Stories The TIME 100: The Twitter Guys by Ashton Kutcher More Related The TIME 100: The Twitter Guys by Ashton Kutcher The TIME 100: The Twitter Guys by Ashton Kutcher The Future of Twitter I, too, was skeptical at first. I had met Evan Williams, Twitter's co-creator, a couple of times in the dotcom '90s when he was launching Blogger.com. Back then, what people worried about was the threat that blogging posed to our attention span, with telegraphic, two-paragraph blog posts replacing long-format articles and books. With Twitter, Williams w

"Injecting Twitter into that conversation fundamentally changed the rules of engagement. It added a second layer of discussion and brought a wider audience into what would have been a private exchange. And it gave the event an afterlife on the Web. Yes, it was built entirely out of 140-character messages, but the sum total of those tweets added up to something truly substantive, like a suspension bridge made of pebbles."

Explains what today's (8/6/2009) "denial-of-service" is all about, and what it means for security of users in the web 2.0 arena (Facebook, Twitter, etc.)