On page search engine optimization could help you. I haven't looked at your hubs, but are your pictures and videos titled with keywords? Are your text capsules broken up and titled with keywords? Little things like that help out a lot.
Also, I've no idea how long you've been doing this, but my traffic is about recovered from the Google Panda/Farmer update - so far as my hubs concerning SPECIFIC things are concerned. Other hubs that I've produced that. . .are more generalized ramblings, stories, etc - things that aren't about something specific in nature. . .are just not search engine friendly, and never were.