I have followed the trail of 's votes last week and It had a good effect on curation rewards.
The best part is it looks like it mostly curates good content in comparison to upvote selling services. This is a win-win situation where you can maximize your curation rewards, meanwhile, you support the good content.
I have started following 's votes, again to analyze how much VP I can spare on it.
If you want to learn about the 's experiment, have a look at the announcement post.