Being someone on the other end of this (I operate several article directory based sites in various niches), I would say absolutely YES!
Here's the thing though, look for article sites/directories that use and even feature social sharing buttons and tools on their article pages. What I saw with my own sites as Panda/Penguin hit many directories like eZine and such, is my sites climbed in SERPs and traffic while tons of others were falling.
The biggest difference between my sites and all those hundreds or thousands of other article sites which lost rankings...on my sites social sharing is heavily featured. Authors who signup to my sites are given information on how to utilize and promote social sharing in their own social circles with the welcome emails they receive, as well as a shorter reminder in the "Your article has been approved" emails they get.
I pushed the use of social sharing on my article sites all along because it was good for traffic for me (it's nice having marketers out there promoting pages on my sites

lol
But now it's become a major factor for SEO too, so article sites/directories that have and promote social sharing features were positioned to come out of the latest Big-G changes in good shape, and I'd say are definately worth posting your content to.
On the flip side though (and bad for us cheap, quick link hitters) is that article sites which auto-approve articles or will approve low quality articles have been hammered, even if they had social sharing features. So, you kind of have to look for article sites that have social sharing and some minimal quality standards if you want any real juice from it.
Just my $0.02 and hope it's helpful.