I think Bitconnect has a lot more than 6,000 victims. They had a Facebook account, which now no longer exists, that had over 120,000 likes on it. I wonder what happened to it, even the Facebook link on their website is now dead.

Here's Alexa rankings:

https://www.alexa.com/siteinfo/bitconnect.co

It's hard to say how many site views that they have, but it's clear they have a high user base to rank at that level. Bitcointalk.org is in the 4000s and according to this site's statistics, there were already over 5,000,000 page views for the first day of September and there are over 1,000,000 members here. My guess is Bitconnect has somewhere between 250,000 and 500,000 members. Most of them probably don't even have a BCC wallet, why bother to withdrawal when it's a useless coin anywhere else. Deposit BTC, buy BCC, lend BCC, repeat. Bitconnect must hold the majority of BCC themselves.