Article marketing is more or less dead. You can still use it for backlinks, but google dropped a lot of articles from first page results.
I think video marketing is here to replace it. I've been trying to focus on SEO the last few months, but I want to get video more involved with it. Both, helping my sites by adding video and trying to get videos to rank.
The pain is getting the videos...after that there are multiple ways to use them.