You have received a @GrumpyCat flag because you or someone else sent money to buy votes from an irresponsible non-GrumpyCompliant service.
@sneaky-ninja, @pushup and @aksdwi are acting irresponsibly by selling votes to people on their post very close to final payout. (~99% abuse rate)
Sending money to these bots is also financially supporting for-profit spammers.
To know what voting bot to use, refer to https://steembottracker.com/ and use those that have 3.5 day or less in the "Max Age" column.
On 28 Feb (the day before @grumpycat made this comment) @grumpycat upvoted himself 9 times for a total of $451.57. In the month of February, he upvoted himself for $22095.89 on 285 posts. A number of these upvotes came after the posts were 3.5 days old. His 9 most recent self-votes were less than 3.5 days old.
I would upvote for visibility, but it kind of makes me feel dirty. Hopefully everybody sees this. :-)