Over at ChangeThis is a free eBook about The New Rules of Viral Marketing: How Word-of-Mouse Spreads Your Ideas for Free.
For decades, the only way to spread our ideas was to buy expensive advertising or beg the media to write (or broadcast) about our products and services. But now our organizations have a tremendous opportunity to publish great content online—content that people want to consume and that they are eager to share with their friends, family, and colleagues.
It is a great read about viral marketing or word-of-mouse, how it can help you promote yourself or your company for free. There are examples of viral marketing such as eBooks and videos at YouTube. There is also a word of warning:
The power of the Internet makes it easier for people to fall in love with you faster. But beware—it also makes it easier for them to fall out of love with you faster.
This was originally posted at another (now extinct) blog of mine.