Registering

http://www.blackhatworld.com/blackhat-seo/online.php

http://www.blackhatworld.com/blackhat-seo/online.php?sort=location&order=desc&pp=200&page=4

if you see the list there are bots registering like this

aanatshtolzeay7478 05:49 PM Registering
aanelasusasda659 05:36 PM Registering
aanessshulzey9673 04:57 PM Registering
aangeasswifta906 05:26 PM Registering
aangelasdrky3583 05:36 PM Registering
aangelasitta9592 06:10 PM Registering
aannatussday2980 06:09 PM Registering
baangelsjunior254 06:01 PM Registering
baannatshtozey974 05:48 PM Registering
baannetaemaaleya5386 05:55 PM Registering
bangelastop3203 06:05 PM Registering
bangelsswifta9647 05:58 PM Registering
bannetaeshtolzey9840 05:46 PM Registering
bannetaeyandxt730 05:43 PM Registering
bannttivanovay1707 05:40 PM Registering
bapatrickmperov4691 05:19 PM Registering
beveasnra750 05:20 PM Registering
beveasshtolzeay1833 05:45 PM Registering
bgregoradark4237 06:16 PM Registering
bolaushtolze2139 05:24 PM Registering
bolgaulittea7295 05:59 PM Registering
brobertotexaxdy8970 06:06 PM Registering
broertostivanov4716 05:38 PM Registering
dizzycfracesa3876 05:04 PM Registering
dizzyctpa9091

there are 100s . see all with registering location.

if you stripped away all the inactive names
all the accounts with 0 posts
all the accounts that duplicate
all the bot accounts
the members list would look very different