With the blog rolling out soon from now... the time came to (finally) make a Spamfilter for all Sparklit products.
You can set a link threshold in Administration > Settings > DIscussion; this will automatically flag posts as SPAM.
We are planning to integrate this with all of our other products by the end of July 2010!
EDIT: We've added the spam filter to our Webpoll and Mini Survey Products! Bye Bye Spam!!!