he more lenses you have, the more likely you'll be picked up by the search engines and see a nice boost in traffic. If you've ever been positioned at the top of the search engines for a popular keyword, you know what that can mean for your business!
When you finish building your first lens, just email their review team. If it's good enough, they'll consider making it the 'lens of the day', which will get you some serious traffic. A word of caution here - they won't choose any lens that appears to be straight out advertising.
You can even make a few dollars with your lens. Squidoo shares all advertising generated revenue with you for advertising on your lens! Some crafty entrepreneurs are making lenses as Virtual Real Estate style publishing sites. In theory, you could make hundreds of great lenses and earn a good income just from the advertising revenue.
The primary benefit of using lenses for marketing your websites is clearly the main reason to get involved. The presence you create and the nearly automatic stream of traffic will be well worth the time it takes to build high quality lenses.