I'd let the spam come in the first instance and not publish the link, based on r...

vikram on March 4, 2009 | parent | context | favorite | on: Ask HN: how would you protect a URL redirection se...

I'd let the spam come in the first instance and not publish the link, based on rules, or algorithms once you have more data. Later on you can block certain ip addresses. Also try creating a blacklist to get you started.