Bitcoin calculations right now is not really a waste of resource. It's used to "audit" the transactions to make sure no one can double spend any money.
I think Mark didn't go into those schools with competing product with the goal of going head on with the competition, but to test the riskiest assumption that he is "building something people want". Going into the school with existing product is the riskiest move, so it should be tested first.
Procedure:
You can choose to reject this Agreement to Arbitrate ("opt out") by mailing us a written opt-out notice ("Opt-Out Notice"). For new PayPal users, the Opt-Out Notice must be postmarked no later than 30 Days after the date you accept the User Agreement for the first time. If you are already a current PayPal user and previously accepted the User Agreement prior to the introduction of this Agreement to Arbitrate, the Opt-Out Notice must be postmarked no later than December 1, 2012. You must mail the Opt-Out Notice to PayPal, Inc., Attn: Litigation Department, 2211 North First Street, San Jose, CA 95131.
The Opt-Out Notice must state that you do not agree to this Agreement to Arbitrate and must include your name, address, phone number, and the email address(es) used to log in to the PayPal account(s) to which the opt-out applies. You must sign the Opt-Out Notice for it to be effective. This procedure is the only way you can opt out of the Agreement to Arbitrate. If you opt out of the Agreement to Arbitrate, all other parts of the User Agreement, including all other provisions of Section 14 (Disputes with PayPal), will continue to apply. Opting out of this Agreement to Arbitrate has no effect on any previous, other, or future arbitration agreements that you may have with us.
One reason I can see that kept apple from coming up with wider screen is backwards compatibility. Most iOS apps are using absolute coordinates, the taller screen is already gave a lot of old apps black gaps on the top and bottom. Wider screen will just make rewriting the apps even more work to support ios6
Canadian cellphone companies are pretty much a oligopoly with 3 big players, Rogers, Telus, and Bell. All 3 of them are super expensive and locks people in on super long 3 year contracts. These companies are so shady they create multiple "discount brands" to make consumer feels like they have more choices. It's not till recently that Canadian government realized the need to create competition and auctioned off some AWS spectrum to a couple "startups", namely Wind and Mobilicity and couple other ones.
Parallel computing is limited by Amdalah's Law. Having more core does not mean you can have have more speed because it's not easy to use all those cores. Most imperial languages are not designed with running codes on multiple core and few programers are taught how to design their algorithm for using a handful of cores.
I can see this platform being a good tool for students and researchers to experiment with algorithm speedups by making their sequential code, parallel.
In my parallel programming class, our teacher had to rig together a computer lab to connect the 12 quad core computers to simulate a 64 core cluster. Then again, 64 core cluster of Parallella would cost like $7000. You can get the same 64 core setup by buying 8 x 8 core consumer desktop computer for under $3000, which will still be more cost effective and probably have ten times more computing power because of the x86 architecture.
It seems to me that more and more companies will just run their own "kickstarted" campaign without Kickstarter like the Lockitron guys. The companies will also no longer be at Kickstarter's mercy to shut down their campaign when they feel like, and don't have to pay the commission. Now it's so easy to setup credit card payment with Square and put up your own"Kickstarter" page.
I would recommend using CanCan for security if they haven't done so already so you can't just type in other users user_id in the url to view or edit.
https://github.com/ryanb/cancan
Cancan is great way to make sure that you can only read or edit your own records in the database with Rails.
THIS APP WILL RECEIVE:
Your basic info
Your email address (myemail)
Your profile info: description, activities, birthday, education history, groups, hometown, interests, likes, location, questions, relationship status, religious and political views, subscribers and subscribees, website and work history
Your stories: events, games activity, notes, photos, status updates and videos
Friends' profile info: descriptions, activities, birthdays, education histories, groups, hometowns, interests, likes, locations, questions, relationship statuses, religious and political views, subscribers and subscribees, websites and work histories
Stories shared with you: events, games activity, notes, photos, status updates and videos
Your app activity from: music apps, news apps and video apps
Friends' app activity from: music apps, news apps and video apps