I agree that @dustsweeper is great program.

My tip is to use https://steemd.com/(@username) substituting your user id for (@username) - or anyone's username to see a record of your activities here, also your bandwith and voting power.

If you wonder about a user's comment you can see their posting history. I confirmed a spammer by entering their username and seeing they'd been posting the same comment on dozens of posts.