You have a different levels of spam.
- Level The worst Shitposter The lowest level is one word/line shitposters like "Nice", "Good project", "Like", etc.
- Level Broken shitposter Posting in so broken english that you cannot understand what he is talking about, example " I conceive that could be viable, mainly in a burly rubberneck loci in organization to construct the pay business in carry easy and fast." I had to copy this one,I just can't make up something like this.
To this level belong also the shitposters that post totally offtopic.
- Level Advanced Shitposter There you have the one-two liners like, " I like this project, I think this project have a great future, I believe in the project that's why I want to invest in it." or copy-paste previous comments.
- Level 0-value Analyzer Then next lever is a bit more sophisticated spam, like analysis of something obvious or something that have no meaning at all like " I like the XXX coin because it's based on CryptoNight which is a proof-of-work algorithm created for mining with ordinary CPU-GPUs" and so on.
- Level The Fake Guru Then you have the highest level of spam which is plagiarism from external sources, I'm not talking about the copy-paste the previous shit-post this is normal practice for the fist levels but this is a text copied from Internet and spun trough the Article spinners.
Those are the worst level of Spam to detect.