Oh yes, I could probably name a couple of sf writers in the multiple follow/unfollow category who were clearly trawling for followers just before Eastercon as part of their promotional push for BASFA voting...

I've wondered for a long time why people keep pushing the idea of spam-following everyone in sight. It's spam, and you will either be followed back by bots, or people will take one look and ignore you. Or if you hit certain usenauts in Grumpy Old Fart mode, block and report you for spamming.