It sure does appear to be nefarious. I can see various reasons for it. None of them benign. The easiest would be a mini denial of service attack. This just renders lots of entries on the main screen of users therefore making the main screen semi-useless. You could also be testing to see if a users rights are automatically upgraded after a certain number of posts. This would require there to be a bug somewhere in the program that they could take advantage of. If David or Lois are paying attention I'm asking for permission to delete these users and others that might pop up as soon as we see them. Have a great weekend.
Scam is a perfect definition. There is NO SUCH DOL REQUIREMENT. We have had clients get calls from them; our clients are educated to know these kind of calls need to be reviewed with us. This group calls to "disturb" the client, to get the meeting, to convince them they are doing wrong things, and ultimately to get the assets under the control of the person who is buying the leads.