See how near to my already quoted u=number this member you quoted is? (u=662306 above and u=662242 quoted below from bbc.report list.
Again look at the users surrounding, say,
https://bitcointalk.org/index.php?action=profile;u=662242 from your list.
(you have another only 38 regestrations away,
https://bitcointalk.org/index.php?action=profile;u=662280)
The next registered user, u=662243 has a 21/21 score (activity/post) and looks the same as your targets.
The next registered user, u=662244 has 177/177, and looks the same as your targets.
Then the next two are 0/0 (and looks the same as your targets, in idle)
Followed by u=662247 having 74/74, and looks the same as your targets.
They are probably the same owner.
I have a list of all the active farmed accounts between 662280 (just above bbc.report list u=662242) and 662342 (past the farmed account you quoted in your conversation u=662306). It is not just post count=activity!
I have added their names, and spread them into category's. (so you don't have too)
Can you see the pattern here? Check the first posts if you need further confirmation.
Over 1500 spam posts here between 22 farmed accounts.
There are thousands more.
*** bbc. spammer list