Over the past six months, the folks at OpenSignalMaps have been keeping tabs on the devices that have been downloading their network monitoring app, and so far they’ve recorded downloads onto 681,900 separate Android devices in 195 countries. Now they’ve taken all that data and splayed it out for all to see, and it highlights rather nicely how big a headache fragmentation can be for developers

Editor’s note: Joe Kraus is a partner at  Google Ventures , focusing on mobile, gaming, and local services. In 1993, he co-founded Excite.com, an early Internet search engine. He also co-founded JotSpot in 2004, a wiki company acquired by Google in 2006

Lenovo rolled out its latest notebook today.

Facebook introduced app ratings and negative feedback metrics to the app insights tool today as a way to help developers gain a better understanding of how users respond to their apps. Detailed on developer blog post , these new metrics allow developers to go beyond monitoring growth trends and gain. Facebook has used this data to determine what appears in News Feed, but developers previously did not have the ability to see these insights or track their performance over time

You’ve heard the stories, the rumors, and the speculation. Our recent string of TC Mini Meetups have been staggeringly successful , which is why we’re bringing the fun to some of the most badass cities in the country: Savannah, GA; Atlanta, GA; Raleigh, NC; and Charlotte, NC. You’re excited already.

Editor’s Note: This is a guest post from TechCrunch Disrupt winner and Getaround co-founder Jessica Scorpio on her experiences at last year’s TechCrunch Disrupt New York.

As a culture, we are getting ever-more accustomed to using social networks as our primary hubs for all information, and that trend is leading to the rise of yet more services constructed like social networks to improve accessibility: one of the latest in that line is DoctorsElite , a new site aimed at linking up patients, general physicians and specialists through a social network framework to make it easier for people to find specialists in certain fields when they need them. Started by a group of physicians working with other medical advisors and technology experts, DoctorsElite is entering the market bootstrapped and with a database of some 500,000 doctors and centers for advanced treatment in the U.S

General Motors plans to stop advertising on Facebook, says The Wall Street Journal  according to “people familiar with the matter.” But I spoke to a source close to Facebook that characterize GM’s efforts as “taking one swing and deciding to quit.” My source says GM’s efforts weren’t social enough, focusing on building apps rather than launching social ad campaigns that spread by word-of-mouth. So what went wrong, and does Facebook need to offer more flexibility to advertisers? Facebook was reportedly unable to convince GM that its ads are an effective way to reach consumers

They say if you want to understand the future, you have to look at children. And if my 10-year-old cousin’s chat history is any indication, we will soon be communicating in emoji, Egyptian hieroglyphics or some other kind of pictographic language that renders the 2,000-year-old Roman alphabet obsolete. Sometimes she sends me full e-mails like this (except it goes on forever): . It either means ‘My cat ate my homework,’ or it’s the Five Stages of Grief in a single word.

Facebook for Every Phone once again topped our list of growing Facebook pages, reaching almost 3 million new Likes this week. There were several musicians, movies, games, sports, and brand pages that also made the list.