This is absolutely true. Steem promoters are growing and increasing in number each and everyday. This is a positive results to promo steem. As we all know, motivation and encouragement plays a major role when you entrust someone with something. So I believe you are doing the right thing by giving them the upvotes you can.

Steemit is ours and we are all obliged to try our very possible best to encourage and motivate the promoters by offering them with upvotes in order to encourage them to keep up the good works they are doing