On my site occasionally there is a problem with like boosting, and people create an alt to do this. They then of course, use this alt to like a bunch of posts to boost the total like number and what not. Currently the only way I can fix this is change the account's password, log in to it, and unlike all the posts manually. And sometimes the user is still logged in when I changed the password, which creates an even bigger problem.
It would be extremely helpful if the spam cleaner could just do this automatically.