I'm looking to drive more traffic to some blogs I maintain. We've had good success with submitting to sites like Reddit and Digg but the process is long and tedious with the amount of content we have. I saw products like Social Submitter and xgenseo that automatically create accounts (scarily xgen also creates dummy yahoo mail accounts and even solves the captcha) and submits articles for you.
The tools seem like an extremely easy way of building up back links on relevant and important social sites without the tediousness of doing it manually. The only thing I'm worried about is that using tools like this will eventually harm my blogs traffic. Does anyone have any experience with such tools or opinions on the subject?