Double Shot #1904

Practical Guide to SQL Transaction Isolation - Walkthrough of an area that many application developers just ignore. You'll want to know this stuff when scaling gets important.
Emojicode - A new programming language written solely in emojis. At least it's easier to read than brainfuck. Barely.
Mozilla’s Send is basically the Snapchat of file sharing - Firefox Nightly now includes the ability to send one-time download links. It's actually useable from any browser.