It is risky , but i suppose one has to take chances?
How risky is to submit to RSS directories? for example you make a post now and the next second will be all over the internet, your content duplicated, how you see this issue from the SEO perspective?
It will not get duplicate if your wordpress is setuped good.
Go to Admin -> Settings -> Reading
Check "For each article in a feed, show Summary"
On that way you will get RSS feed like this:
In this case spam blogs work for you, since they giving you backlink on every article you publish. With good promotion your blog will get indexed by maybe 50+ spam blogs. Sulumits Retsambew articles but only from certain categories are republished on maybe 20 sblogs.
I use this on all my blogs.
And dont ask how I figured out.
Long time ago I had warez spam blog with 3k visitors daily where I did not worked anything. People from blogspot did whole job for me.
It gained PR4 and its traffic just for a few months and it gots 50 articles every 6 hours. I even removed links of original authors and Google always firstly indexed my site then theirs, so probably it considered that they are spam blogs. Eventually with my learnings and my moral/ethics getting higher, I dropped idea and turned off the site...