As someone who personally hates bid bots, passively rewarding followers of an email list is an interesting idea. It's kind of like a steembasicincome scheme. If your vote was massive like some other bots I might be more concerned about its affect on content discovery, but across 4k users seems like that will give a decent baseline vote to people.

It's an innovative use of SP. It's definitely worth participating and should be interesting to watch. It should give you a similar return after the HF right?