I've just banned a lot (over 1,000) pretty suspicious looking user accounts from Travelfish. The majority of these are either originated from mainland China or using a Chinese email address, among other things.
I realise that there are some real people (rather than spamming morons) who I've probably caught up in this. For that I apologise in advance. If you're suddenly getting a "You're banned" message when you try and login, please post in this thread (obviously you'll need to start a new account to do so) and I'll unblock the accounts as requested.
Apologies for any inconvenience.