Easiest way I've found to spot bots on Twitter is username patterns where both the handle and display name are similar or the same with 1 or 2 words (often a first and last name) and a random number. For example JohnDoe127474 . For a more realistic example: I just went to the first trending semi-poltical topic and this was the first bottish account I found (the tweet itself is pretty benign): https://twitter.com/Elsi…
So that can also apply to naïve users.