Nice post...actually, out of the aforementioned tools, i cant do without using steemfollower. I have not seen a great upvote exchange tool like that before.
More so, i'm planning to use busy.org; i have read some posts that made me realize what i am misssing for not using it... Busy.org upvote the post that makes busy as one of its tags, mind you, i think you must have a particular number of followers to use this feature.
cool :)
Thank you @tastetwist