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You can't vote separately right now, but I think some people are working on a way to do that. Some people have set up other accounts and staked their different tribe tokens to those different accounts for curating the different tags. I prefer to just keep it all in the same account and just vote from the creativecoin.xyz front end since that is where most of my stake is anyways.

Looks like I have a lot to figure out, thanks for making this Wes!

As far as earning the tokens you really don't have to do anything except use the tag (#palnet #creativecoin and there are others but those are the two I am in to). There is no reason not to use the tags, basically :)