7. Travelzoo ( TZOO) is an Internet media company that publishes travel and entertainment offers, with 20 million subscribers worldwide and countless Web site users. It has North America and Europe units.

12-Month Sales Growth: 20%
12-Month Net Income Growth: 5,427%
Cash Flow Multiple: 40 (105% peer premium)
Quarterly Operating Profit Margin: 21%

Analyst Opinions: Just two researchers follow Travelzoo, which has a market value of $707 million. One ranks its stock "buy" and one rates it "hold." Wedbush, the more reputable of the two, values the stock at $50, suggesting 26% of potential upside. At a forward earnings multiple of 48 and a book value multiple of 17, Travelzoo appears expensive. But its PEG ratio, a measure of value relative to growth, of 0.7 reflects a 30% discount to fair value.

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