I'm thinking about building a digg like site , and the first one that comes to mind is using the pligg cms. It has lots of templates and resources, but it's also very vulnerable to spam attacks ( from fellow blackhaters ) so i'm wondering if it's adviceble to build my website with pligg, or try another solution ( like drigg, drupal based ) but with less resources. Also, pligg uses recaptcha. Is it efective? Any help from fellow blackhatters ( that spam pligg ) or pligg based websites are welcomed.