Out of the guys here who do social networking/linkbaiting, I'm wondering how often you submit your articles and how often?
Nobody uses them for sales, at leat nobody who knows what they're doing. Even for AdSense they're poor. For linkbaiting you can't beat them.
I'm yet to see anything that would change my mind - anything with even a hint of sales patter is going to get the thumbs down from most social networks.
it really depends on the offer - it does work well with adsense and it will also work with cpa offer. I tried promoting CB product and didn't have any success...
Here lately I've only been submitting like two articles (for my own personal site) a month to Ezine directories. I do try to answer a few questions using my link in the resource box at Yahoo Answers a day though.