What are these twitter accounts doing?

Factual Questions
1

I work for the Social Media department of a test-prep company. For the past two weeks, I keep seeing the following tweet:

This is NOT a retweet; it’s just twitter accounts (often named just strings of random numbers or letters) posting the exact same message under their own names.

What do they hope to accomplish by doing this? Are they spamming for spamming sake? Or are they planning to poach followers from the original poster of that message, then switch to spamming ads? Or what?

2

Looking at an example, it looks like an account set up to follow promotional accounts in order to pad their numbers.

3

I agree, it’s likely these were set up by “buy followers” style spammers. They use tweets or quotes copied from various sources in order to make accounts look legit and sneak past Twitter’s spam hunters (who are very good).