I'm trying to get my site to spread virally. I added the standard social bookmarking links on my site, but I have yet to see any traffic from those sites. Am I doing something wrong? Is it not obvious what those buttons do? You can see an example here: http://www.traderbots.com I would appreciate if someone take a look and let me know if they're not obvious or attractive or what? Kind of like a quick Usability study. How do you guys get people to socially bookmark your site?