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Yes, you don't need to create different accounts. Like @acidyo said, all you need to do is use the tags to earn those tokens. For example: creativecoin, palnet, etc.

Thank you

For the steem-engine.com tokens you need to use specific tags for the posts to show up on their front-ends and be upvotable with their tokens, I recommend you use steempeak.com to be able to view the amount of upvotes you get in those specific tokens.

Ah okay, interesting. Thanks. So it's more about the tags than completely joining each individual site (like, i can join using my main Steem account and dont have to keep making separate ones)?