Well, you should not be voting only based on the communities you are interested in as Hive is much more that just the communities.

There's SteemPeak by PeakD, which is the most used frontend. There's arcange, who's running Hivebuzz, a very cool service with badges and statistics.

There's yabapmatt and stoodkev who are running Keychain and these are just a few from the top 20.

There's also threespeak, the cool video service we have on Hive.

You should look around, see what they do and use up all your votes.