Repository
https://github.com/holgern/steemrewarding
steemrewarding.com is a feature-rich automatic voting tool. It can be used to create voting rules at https://steemrewarding.com, using several parameters. It is possible to automatically optimize vote delay times in order to increase curation rewards.
Posting authority needs to be given to the 
steemrewarding is currently used by 710 (3.5 %) users which created 4601 (2.7 %) rules for posts,
352 ( 3.2 %) rules for comments and 606 (10.2 %) trail vote rules. In the last 7 days, 80043 (282.7 %) time based votes
and 17045 (-4.7 %) vp based votes were broadcasted through steemrewarding.
downvote trail
New downvote trail rules can be created at https://steemrewarding.com/new_trail_downvote_rule
This allows it to follow downvotes from trusted accounts and broadcast a downvote shortly after when the account downvote power is above the defined threshold.
The parameter are similar to a vote trail rule, but it is assured that the vote weight is always negative (downvote) and the downvote power will be monitored instead of the votepower.
The downvote power is used for these parameters:
In the example, the min_vp is set to 50, means that a downvote is only followed when the downvote power is above 50 %. When vote_when_vp_reached is enabled, the downvote will be pending and broadcasted when the given min. downvote power is reached by the voter account.
New downvote API functions
/api/new_trail_downvote_rule
Can be used to create a new trail vote rule. A voter_to_follow parameter must be given.
/api/delete_trail_downvote_rule
Deletes a trail downvote rule. A voter_to_follow parameter must be given.
/api/edit_trail_downvote_rule
Edits an existing trail downvote rule. A voter_to_follow parameter must be given. Only variable names shown at /api/trail_downvote_rules are accepted. The parameter of a vote rule are changed when attached to the api.
/api/trail_downvote_rules
Shows all trail downvote rules.
Broadcasting up to 6 votes in one block
This was necessary in order to reduce the vote delay.
You can see how the vote is bundled: