You know, some Twitter accounts have millions of followers just because they retweet ! And they can even make a living by posting sponsored tweets between retweets!

Another reason is that, among people retweeted, some will "follow" this account, without any other reasons, and this can inflate their followers count and so expose their own tweets or sponsored tweets to more people ...

Most of this is Three Card Monte, or Where's the Pea Under the Shell ... all illusions. These are not humans, and the sad thing is the tech giants seem to love this bogus traffic so they can tell investors:

"We had THIS many hits this month!"

I pay as much attention to those kind of reports as I do to fishermen back from vacation who say their biggest fish was "THIS BIG!"

Like Pinterest , reposting images from others (without minding legality of it), and then people re-pin, and re-re-pin etc...

As far as it is not detrimental to my account it's ok. @Dimitri thanks, never thought about BOT getting any results in twitter.

As far as it is not detrimental to my account it's ok.

hum... it's hard to tell, you know.

Good content often gets RTs, and its quite possible the operators decided your account content was good, making thier account appear good.