Ever wonder how a trend or an idea gets started? Whether we are talking fashion (who decided that embroidery belongs on the cuffs of jeans?), food (who decided wraps are in?), television (can you say reality TV?) or any other "must-have" or "of the moment" phenomenon, there was someone who started the trend. Trying to isolate WHO that person is has been a goal of marketers for years.

In Seth Godin's new book he talks about how ideas start and how they spread --- how they become ideaviruses. It's about how trends, products --- and yes, book buzz --- get started and proliferate. To unleash his own ideavirus, he is offering UNLEASHING THE IDEAVIRUS online here for free.

Some of the questions answered in UNLEASHING THE IDEAVIRUS:

• If you don't have time to read the whole book, here's what it says.

• The future belongs to people who unleash ideaviruses. What's an ideavirus?

• Quick. Name an oil painting hanging in a museum somewhere in the world.

• What's the difference between word of mouth and an ideavirus?

• What's a "sneezer?"

• Why is a vacuum the best friend of an ideavirus?

• What does it take to build and spread an ideavirus?

• What are five ways to unleash an ideavirus?

• Who are some powerful "sneezers?"

• What do Tupperware, Hotmail and Beanie Babies have in common? Here are companies you know who have unleashed ideaviruses.