My question to the mods, how to properly report those threads?
"This user might be a bot since there are others with the same nickname style that are posting crap" does't look like a good explanation to me in a report.
I know your looking for a mods explanation, but if we are specifically referring to the 1 post newbie bot invasion I've just been reporting them with "Plagiarism. Original source: Every single one of them I've come across was either using old posts here on the forum or copying from popular news websites. The earliest post I've seen copied was in 2010. "This user might be a bot since there are others with the same nickname style that are posting crap" does't look like a good explanation to me in a report.
All of them were marked good so should be sufficient.