Interesting weekend events

As always, on Monday, a short selection of what you could miss over the weekend.

Yandex name in a patent lawsuit in the United States.

Business angel tips.

Memo to a novice teacher.
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The Duckduckgo audience is still growing .

Apple and their guidelines are outdated .

The etymology of "hacker" by Paul Graham.

Facebook is threatened by a security professional who has found a serious vulnerability on Instagram.