Yes they can do that on the microblogging.

However, as I said in a few other comments, I have a feeling that the rewards will be capped to start. Secondly, and this is true with all posting, people do not have to vote for it.

So if someone is obviously throwing up something to just get votes, it is best to pass on it.

I often do that with comments that are just canned "nice post, thank you" type comments.

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