Lately I've been getting spammy comments on my posts like: 'nice post', 'nice', 'follow me, I follow you' and other comments that clearly show that the user didn't read even a single sentence. It doesn't take a genius to distinguish between a real comment and a spammy one. Just go to the user's profile and check out his/hers comments.
So from now on I'll clean the nice comments with a flag on my posts. Yeah, it's not a pretty solution but I'm sure it will have an effect. An upvote is more than enough. The comments section is a place to start disscusions and talk on topic. If you don't agree with me, tell me, don't write 'nice post', because it's not.