Kaneskii is a message board where content is ranked by value. Each vote costs a dollar and contributors get paid by voters.
Tipping - Ridiculously quick tip calculator
Tippin - Tip anybody on Twitter with Bitcoin
Toothpick - Calculate your tip based on the server's gender
Puma Browser - Privacy focused browser with a new way to pay for content
Tip-Calculator.org - Calculate Your Tips & Split Your Bill in 2 Clicks
Indiefy - The biggest independent record label worldwide.