Buying the brand and showing online fan support are the best ways to help. The studio *is* watching Ruby Gloom on facebook and brand sales, and they will make more specials/episodes if they see that Ruby Gloom is truly popularity.
Buy the DVDs! There are various DVD releases. Region 1 DVDs can be found on the Canadian Amazon website, http://www.amazon.ca. (Canadian Amazon does ship to the USA.) Every NEW purchase will help to support the show. Purchasing used copies doesn't give them anything though! Only buy new copies! Purchasing other merchandise helps too.
Be sure to join the official Ruby Gloom facebook group (coming soon, according the studio) and show your love of the cartoon. Fan involvement helps too, and the studios will be watching for it! So join existing Ruby Gloom fan facebook groups, like this one for example. Or make your own fan group. You can also show their support by promoting the Ruby Gloom show and brand at any other popular online community you can think of.
Feel like sending an email to let them know you love the show? Go to http://www.ytv.com/about/contact.asp, choose to send it to “YTV.com” with the subject “Show”, enter your email address and tell them. Say how much you enjoy Ruby Gloom and that you'd love to see all new episodes. And of course, be nice to them about it.
While your at it, write an email to the webmaster, email@example.com letting him/her know you love the show as well, and ask for any other advice he/she may have to help show support for the show.
We the fans can make a difference, and we can have more Ruby Gloom. Let's get to it!
A Word about DVDs on AmazonBuyers should be aware that the only place to buy English DVDs of Ruby Gloom is currently www.amazon.ca.
You can find non-English DVDs on normal www.amazon.com, but only buy those if you mean to. Currently there are Japanese and German DVDs listed there.