There are a ton of sites the take RSS feeds and re-post under their own bylines. I've seen two of them doing mine. One of them, after the takedown notice, switched entirely to Amazon category listings as "posts". The other one dropped my stuff, but still has several other feeds re-posted.
I've got some Google Alerts out, so I see all the ones where someone links to me, but I haven't noticed it on the SEO sites. Can you give me some example links? I'd like to see what they're saying.