Plentyoffish… free, profitable.. destined to fail? is a Vancouver success story frequently sited as a perfect example of how a one-man operation powered by simple online ads can make a fortune. But Mashable, a Web 2.0 blog (which Plentyoffish certainly isn’t, in terms of design or interaction) questions whether the site’s lack of a entry fee or complicated psychological tests makes it more appealing or just an easier platform for sleaziness to proliferate.