Although the following takes place on the Russian version of Yaika!, it's a good example and some encouragement for others nonetheless. The point is that some of the users have started doing somewhat educational broadcasts using Yaika! and I, for one, think it's a brilliant idea.

We have a person who thought it would prove useful to teach self-defense to women. As usual, the Internet is the best place for that as one can maximize the capacity of people able to view those lessons. To be honest, it is pretty rough out there. The teacher is the president of the Estonian Real Aikido association, so he really know what he's doing. Thanks to him a lot more people can roam the streets with confidence.

Another quite interesting broadcast is by a student keen on chemistry. He's going to do a daily show for all the people also interested in chemistry, discussing the Mendeljev table and different reactions between substances. As far as I've heard, he's pretty good, so you'll be in capable hands.

Those two people are broadcasting on Russain Yaika!, but I still think those are some great ideas for shows. People can easily share their knowledge with others, hassle-free.