Hi Don,
I have a couple of suggestions for you. Regarding article submissions, no, it's probably not worth your time any more. Yes, guest posting would probably be way more beneficial, provided you are selective and relevant about what and where you choose to write.
Regarding social media, do you have a Google+ account? If not, establish one and then establish authorship of your Website and blog. There are numerous articles that can guide you through this process. Here's one just for reference: http://www.google.com/insidesearch/features/authorship/index.html Learn everything you can about and start participating in Google+. Skeptical? Here's a great post that makes the case: http://www.blindfiveyearold.com/author-rank
Regarding your blog. I notice that it is a Wordpress.com blog instead of a blog built on Wordpress.org I made the same mistake myself when I first started blogging and built a blog on Wordpress.com out of expediency. I only found out later that Wordpress.com is terrible for SEO because it is inherently limited. Last I checked you can't even install Google Analytics. If at all possible, move your blog to its own hosted domain. I'm not sure how complicated a migration from Wordpress.com to a regular Wordpress ite would be, but I can't image it's that bad. If there's an alternative to move it onto its own domain via Yahoo that might be a good possibility too.
Lastly, and this is very subjective so please take it with a grain of salt, you sound bored with your own content. If you aren't passionate about it, that lack of passion is going to come through. Perhaps it might be worth outsourcing some of the content production if it's something you don't feel a fire in your belly to do. There's just so much competition out there that if you aren't communicating passionately about your products, services or whatever it is, then it's going to be nearly impossible to persuade a complete stranger to care about it.
Those are my suggestions. I hope they help somewhat. I think some of your products are cool and quirky. I hope the holidays bring an upturn in business!
Dana
