According to this MediaPost Publications article, word-of-mouth marketing is one of the fastest-growing alternative media formats. And it's expected to surpass $1 billion in 2007, thanks to social networks, blogs allowing consumer input, and other Web 2.0 technologies. Word-of-mouth marketing hit a turning point in 2006 when it started becoming a larger part of marketing campaigns. Analysts predict when the numbers come in, the trend will continue in 2007, but will still capture less than one percent of industry dollars. Other methods of advertising like direct marketing and branded entertainment are still most popular.