Robert, I'll try RSS delay, although I'm not sure if it will help. I think I'm indexed in Google before scrappers, because they appear in SERPS 10 minutes after me and then get above me. But, I'll try anyway.
The most interesting thing for me is backlinks part:
Two days ago I've posted an article and got 125 inbound links to the story during the last 2 days from both others' front pages and post pages, according to Backlink Checker.
Around 20 of those links are from very high quality sites in my and similar niches, including one site that has PR 8.
I'm nowhere to be found in SERPS when I search for query My Post Title.
On # 1 in SERPs is a post on a social bookmarking site only containing a link to a scraper site with my article. The #1 has ZERO backlinks. #2 in SERPs is another scraper site with another copy of my article with and ZERO backlinks to it, according to Backlink checker.
What a mess...
It's best for me to stop posting doesn't it?