Originally posted by pathdoc either empty photostreams or photostreams/fave lists with shady content or exclusively self-promotional selfies
I've been on Flickr since 2008, and over the years have somehow accumulated over 700 followers. A small number of these are people I know directly or from online. I usually don't get too fussed about followers, though I do check each one and if I thought they were a bit suss I'd give it a week or so then block them. If they're adding lots of people to their follow list they probably won't miss one dropping off, and too bad if they do as I would remove them then block them.
One thing I do as a part of regular monitoring of activitiy on my stream is to monitor the faves added to an image and if a person has no images at all I just block them. If they're a brand new member to Flickr I tend to give them a month then either disregard them if they've started adding images or block them if there's still no images posted.
A more recent trend you and another member have mentioned only started in the last couple of months. I get a fave from an attractive young lady who only has a small amount of suggestive non-nude images and a link to a website. This is obviously marketing or a straight up scam, so they just get blocked. I think you can report problems to the admin staff but I don't think it will stop them altogether.
The reality of Flickr is you have to assume that along the way your images can be taken (this has happened to me) so I don't post large and do the monitoring that I do as a token effort to try and avoid others taking advantage. Because I post to the internet I know I can't stop it so I don't get too wound up, however my circumstances are different to yours so I understand your concerns.
As THoog has suggested if you want to manage your images you can do this by choosing which of your followers are family and friends and use that category for photos you want to share with those people and not the broader commuity. This is an easy change to do so you can post public images as well as images only for friends/family and change it as you need to.
Tas