I used to spam mininova.org(until they disabled links in comments) all the time for visitors to my website, i sometimes got 10,000 a day from a hour or two of work. My question is does anyone have any good places they would like to share? [I hope this isn't against the rules if it is I'm sorry]
Spamming is not a good tactic to use for the long run. If you plan on making your site very big, reviews may be written about it and spam will look very bad on a review. Also, Google can differentiate spamming from backlinking by having a certain pages:links ratio on the master URL and from experience, they will ban your IP and site from their listings. However, if you are intent on spam, Twitter, The Pirate Bay and Myspace are easy enough to spam.