What Does My Site Cost shows you how much it costs for someone to use your site on mobile networks around the road. It can be somewhat enlightening.
Here's a good example.
If you’re using Bootstrap then this is a handy way to Copy, Paste and Save time.
12 Time-Saving Bootstrap Examples
Microsoft will bypass carriers, push Windows 10 updates directly to phones – not sure if this is news or simple common sense. When it comes to device updates, the simple rule of thumb is “Don’t do what Android does” and you’re probably going to be fine.
The Brilliant Star Wars Galaxies Idea That Didn't Happen – there’s a number of these posts from Raph Koster, which will appeal heavily to fans of SWG.
How click farms have inflated Social Media Currency – interesting if you’ve ever wondered about the source of people’s likes/followers and so on.
Web Design Resources: CSS Tutorials, Buttons, Code Snippets
Inspiration for Button Styles and Effects - A collection of fresh button styles and effects for your inspiration. We use CSS transitions and pseudo-elements for most of the effects.
22 Fresh Free Templates in HTML/CSS and PSD: February 2015 Edition (yes, it’s not February anymore so some links may have gone stale)
Flat Firefox is a simple design that uses pure CSS, portraying a Firefox window in an entirely flat design.
DropzoneJS is is an open source library that provides drag’n’drop file uploads with image previews (with no dependencies)
ICONO is a collection of pure CSS icons
Msdotcom/WinJS Grid Framework is the framework used by Microsoft to create Microsoft.com (Demo / Github)
shouldiprefix.com should help answer that question.