Now that Defense Distributed is on the defensive, it’s time to think a bit harder about what 3D printing really means. To that end, Michigan Tech is sponsoring a Printers For Peace contest that is encouraging designers and engineers to make amazing stuff using a 3D printer that can change the world for the better. “Unfortunately, the only thing many people know about 3D printing is that it can be used to make guns,” writes Dr. Joshua Pearce, founder of the project.

“This is an open-ended contest, but if you’d like some ideas, ask yourself what Mother Theresa, Martin Luther King, or Gandhi would make if they’d had access to 3D printing.”

The deadline for the contest is September 1st and they’ll announce winners on the 4th. They are looking for designers to build things that will help, not harm, people.

“The tech industry is, frankly, being greedy. They are going back and asking for changes to language they helped write and blatantly trying to roll back requirements that give high-skilled American workers a fair shot at getting a job,” said AFL-CIO legislative Representative Andrea Zuniga DiBitetto about new proposals to ease the hiring of high-skilled foreign workers.

Facebook founder Mark Zuckerberg reportedly called Senator Orin Hatch to push more tech-friendly changes to the comprehensive immigration reform bill. Among Hatch’s most contentious suggestions is an end to a 90-day wait period before companies can solicit applicants with a foreign work visa. According to Reuters, under Hatch’s amendment, employers would only have to make a good-faith effort to hire Americans.

While, conceptually, comprehensive immigration reform has strong bi-partisan support, its passage is far from certain. Reuters could not report whether unions would support the bill, should Hatch’s changes go through.

I like little notebooks. I need a place for my introspective musings. Moleskine notebooks are fine. But now there’s DODOnotes, a clever little notebook *slash* iPhone holder that could soon earn a place in my pocket.

This contraption is from DODOcase, the same San Francisco-based startup that created the make-a-tablet-look-like-a-book craze. DODOnotes costs $13.95 and is available for both the iPhone 5 and iPhone 4. Sorry, Galaxy S owners; DODOcase doesn’t want your money.

This isn’t a case, per se. DODOnotes is more of an open sleeve. A colorful elastic band holds a naked iPhone into a slight frame. Yeah, that band prevents the owner from, well, playing Dots while it’s held in place, but answering the phone or glancing at notifications is totally possible. But for most actions, the phone needs to be removed. The case is available in red, black or blue.

The first rule of being cool is not telling people you want to be cool. Yahoo is not following this rule, with its M&A team in full pray-and-spray acquisition mode post-Marissa Mayer hire, hitting on everything that walks, or at least has traction.

I’ve heard rumors that Yahoo was trying to get into the following deals over the past couple of months: Foursquare (at an $800 million asking price). Path (at a $2 billion asking price). Pinterest. Hulu. Zynga. Daily Motion. And at a smaller scale: Gdgt. Wavii. Media Ocean (?). A spate of others. And now Tumblr. “Literally they talk to everyone,” said one person familiar with the matter on the matter.

There was a kid in my high school who used to buy the popular kids lunch so he could sit with them. Yahoo has become that kid. At a reported $1b Tumblr would be a pricey picnic, about 1/4 of the cash Yahoo has on hand.

Despite rising costs and increasing competition from rivals like Tencent, Chinese Internet giant Sina narrowed its first-quarter net loss to $13.2 million from $13.7 million a year earlier, the company reported today. Sina’s net revenue increased 19 percent year-over-year to $126 million, strengthened by stronger-than-expected non-advertising revenue.

The company’s Sina Weibo is China’s largest microblogging service, with over 46 million daily users. Last month, e-commerce giant Alibaba Group bought a 18 percent stake in Sina Weibo for $586 million, a deal that valued the site at over $3 billion.

Sina hopes that the Alibaba deal will allow it to strengthen advertising revenue despite the slowdown in ad sales that has hit all major Chinese Internet companies, including Baidu and Tencent. Sina’s ad sales dropped 15 percent in the first quarter from the previous quarter to $94.3 million.