If you're taking a taxi in Chile or New Zealand, for example, the driver won't give you the evil eye if you don't tip -- it's not expected.

CNN: How to tip outside the States

Be assertive and confident when dealing with a personality clash, but don't let assertiveness tip into aggressiveness or confidence become a confrontational stance.

FORBES: Magazine Article

Be sure to buy a record and don't forget to tip...

NPR: Lemony Snicket's 'Tragic Treasury'

It's self-serve, so you don't have to tip.

WSJ: Manhattan's Low-Rent Dining in Hiding

And therein is the first tip, don't ignore the package.

BBC: Self assessment basics

"I don't think this one is going to tip the balance, " Gallagher said.

CNN: King: Same-sex marriage debate heats up in New York

You can also email it to us by clicking here or text the letters CNN, followed by a space and your tip, to 55333 (don't forget the space after CNN).

CNN: Contact Us

King added his tip for success was Shania Twain's That Don't Impress Me Much.

BBC: Viewers vote for top record

Tools don't get much more simple than the needle, a long slender object with a pointed tip.

FORBES: No. 13 The Needle

Just one more tip from the gurus of the gold rush: Flirting and fawning are fine, but don't discuss bank accounts.

FORBES: How To Land A Rich Man