Lifehacker, tips and downloads for getting things done

Sivar recommends an article by George Ou examining why BitTorrent affects performance so much more than other types of file transfer and a recommendation on how to fix it. The suggestion is to modify P2P clients so that, at least on upload, they space their traffic evenly in time so that other applications have a chance to fit into the interstices. “[Any] VoIP [user] or online gamer who has a roommate or a family member who uses BitTorrent (or any P2P application) knows what a nightmare it is when BitTorrent is in use. The ping (round trip latency) goes through the roof and it stays there making VoIP packets drop out and game play impossible.”

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Windows/Mac/Linux: Freeware application Phantasmagoria adds effects to your digital photos through a slick, simple-to-use interface. The program provides an impressive range of effects and can upload the results to photo-sharing site Flickr or easily share your results over Twitter. You can snap and annotate screenshots, and take webcam photos and go straight to adding effects, similar to OS X’s Photo Booth. Phantasmagoria is freeware, cross-platform, requires Java. Check out the sample page for a closer look at Phantasmagoria in action.

BlueshiftVFX sends us to Wired for some video of the impressive, mind-controlled prosthetic robot arm invented by Dean Kamen. “Kamen’s arm, dubbed ‘Luke’ (after Skywalker, I assume), is an incredibly sophisticated bit of engineering that’s lightyears ahead of the clamping ‘claws’ that many amputees are forced to use today. The arm is fully articulated, giving the user the same degrees of movement as a natural arm, and is sensitive enough to pick up a piece of paper, a wineglass, or even a grape without mishap.”

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I Don’t Believe in Imaginary Property writes “Wired has an interview with MediaDefender in which they try to explain why they attacked Revision3, which uses BitTorrent to host its own content. Somehow it eluded MediaDefender that they had injected fake content into Revision3’s tracker, so when Revision3 changed configuration to forbid this injection, MediaDefender’s systems saw it as a pirate tracker with lots of illegal content (which MediaDefender had put there) and attacked. In other words, everything they did was intentional except for the choice of target. Given that they have 9 Gbps of bandwidth dedicated to denial-of-service attacks against torrent trackers, all anyone needs to do is to trick them into attacking a hospital or government facility. MediaDefender has never been very competent, after all.”

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As per several readers’ requests, I just updated the Gmail Always Show CC: user script (and its BCC sibling.) Now the scripts can show the CC or BCC fields using a key combination; and they work when replying to messages, too. Go download the updated version of your choice.

theodp writes “Computerworld reports that the Bush administration’s recent decision to extend the amount of time foreign nationals can work in the U.S. on student visas is being challenged in a federal lawsuit by H-1B visa opponents. The suit, filed in US District Court by the Immigration Reform Law Institute and joined by The Programmers Guild and other groups, charges that the administration — acting through the Department of Homeland Security — exceeded its legal authority with a no-notice-no-comments ‘emergency’ rule change that extended the Optional Practical Training work period from one year to 29 months. Critics say this is little more than an effort to skirt around the H-1B cap limit. Because extended stays are limited to those whose degrees are in STEM (Science, Technology, Engineering, Mathematics) fields, educators are speculating that the rule change will drive international students away from non-STEM majors.”

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An anonymous reader writes “Customers hosting with ThePlanet, a major Texas hosting provider, are going through some tough times. Yesterday evening at 5:45 pm local time an electrical short caused a fire and explosion in the power room, knocking out walls and taking the entire facility offline. No-one was hurt and no servers were damaged. Estimates suggest 9,000 servers are offline, affecting 7,500 customers, with ETAs for repair of at least 24 hours from onset. While they claim redundant power, because of the nature of the problem they had to go completely dark. This goes to show that no matter how much planning you do, Murphy’s Law still applies.” Here’s a Coral CDN link to ThePlanet’s forum where staff are posting updates on the outage. At this writing almost 2,400 pelople are trying to read it.

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Apart from being the most useful application on my Mac, Quicksilver is also one of the most attractive. But that doesn’t mean it can’t be improved, either, and weblog MacApper has rounded up a few of the sexiest Quicksilver interfaces on the block. Aside from the eye candy, the other great thing about alternate interfaces is that many of them change the way you interact with Quicksilver—meaning that if you’ve never quite gotten the hang of Quicksilver, a new interface may be just the ticket. If you’ve got a favorite Quicksilver interface that you’ve been using, let’s hear about it in the comments. If a new interface has you aching to dive into Quicksilver, check out our beginner’s guide along with our many other Quicksilver guides.

Barlaam notes a post from the Renesys Blog which follows up on news they discussed a couple weeks ago about the ‘identity theft’ of a root name server. To emphasize the issue of safeguarding such a system, they’ve now posted an explanation of exactly how the situation could be exploited. “It shouldn’t be too hard to see that you could end up answering every DNS query from an organization that came to you for an updated list of root name servers. Every one. And you might end up doing this for a very long time, especially if your answers were largely correct. An attack like this would have no resemblance to the YouTube hijack, where the entire planet gets a blank page and it’s immediately apparent that something isn’t right. Obvious events like this will continue to occur, and we’ll continue to resolve them relatively quickly. But as this incident demonstrates, DNS hijacks are far less obvious and potentially far more harmful.”

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Scientific American is running a pair of stories about what words and illusions can tell us about the brain. Mark Changizi of the Rensselaer Polytechnic Institute is interviewed about his research into the relationship between the mechanisms of the brain and the evolution of language. The second article contains a slide-show of various illusions and why the brain interprets them as it does.

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