Both sides have a fair argument to make with regards to self voting. The real solution is a hardfork with some rule changes made. Or my plan to make https://SteemThat.com such a powerful community that we can have a spot at the table to vote.

To me there is a difference between buying promotion of ones post and clicking the check box. No great author writes a book without advertising and promotion in the plan. Or at least hires a company that does this task.

When you see a whale with hundreds of comments and posts that have been self voting relentlessly on spam and plagarized content its appalling. It drains the rewards pool so much that new members often only get a few pennies for a post no matter the quality.

With that said the best way to use promotion upvote services is to gift such things for high quality posts that you like. Some will return the favor at some point. Either way you have done a good deed and brightened someone elses day. Everyone is so greedy now. Sad really.