I have seen the SSC twitter account post some of the topic questions that have gotten posted but not alot of answers too, or that where interesting. I would do the same thing every-now-and-then as well if I learned something from the post or new someone on twitter that may have had the same issue.
I don't know if you could do it where it would post automatically to the user's Twitter account with some default message like "Hey you should check this SSC topic out: link", or just offer us a short URL link to copy to Tiwtter.com, Seesmic, or TweetDeck.
Just a thought late at night...