Thanks for the plugin. It seems to be very effective. I use this plugin on a classified ad site that only sells to and in behalf of users in the UK. So I have blocked ALL but UK users. My concern is this:
Is this likely to effect Google's indexing of the site at all? Should I consider unblocking US traffic too?
As our users are aggressively targeted by spammers I want to reduce the opportunities for access as much as possible. I welcome your thoughts on this.