Minnowhelperteam has 6 Bots, depending on your needs, you can bid for a vote on a comment or a publication, you can use one or the other Bot.
The voting power of the Bots @minnowhelper-1 to 5 is smaller but they are built to vote comments. On the other hand @minnowhelper and @postpromoter (Bot of @yabapmatt) have greater voting power and are to promote Posts.
In summary:
-You send to @minnowhelper-1 to 5 (only 0.001 SBD / STEEM) with in the memo the URL of your Post or comment to vote.
-You send to @minnowhelper (minimum 0.010 SBD / STEEM) with in the memo the URL of your Post to vote.
-You send to @postpromoter (minimum 4.000 SBD / STEEM) with in the memo the URL of your Post to vote.
Check the status of the Bots on this link
http://www.minnowhelper.com/index.html#bid