Why tip 20% for slow service? Afraid of appearing cheap or confrontational? TurtleTip.com to the rescue! They’ll send you a tiny packet of TurtleTip stickers for your wallet. Next time you leave a smaller tip, also leave a TurtleTip.com sticker on the bill, letting the server know the remainder of their tip is going to charity. Each sticker includes a printed explanation to the server why he’s not getting a generous tip.
Once you’re out of stickers, return to TurtleTip.com to donate the difference from all those tips to a worthy charity. They’ll send you another packet of FREE TurtleTip stickers. Each TurtlePack comes with a dozen stickers and a "tip tracker."