Re: [arch-general] The principle behind MSN & Yahoo invisible scanners?

On 28 August 2010 19:24, Nilesh Govindarajan <lists@itech7.com> wrote:

 Go to google.com and search for MSN & Yahoo invisible scanners. You'll find a big list.

So what's the principle of their working? I'm thinking of writing a pidgin plugin to catch invisible buddies.

I guess they do some ping-like thing.