I got a few question that need any GM or IT professional to answer.

1) Is that internet cafe all pc same IP ?
2) Can Keylogger program sent thought online (Example. Email, MSN,.....ect)
3) What if the person that sit beside or behind fabulous to login to the acc (same IP?)

Best Regards,

why would anyone wanna use different names and add confusion during an investigation?

well ip gets from router.
lets say internet cafe has 20 computers.
They have LAN with different ips but in the end to contact internet the IP is same, the router sends packets to the PC that requested it. but OUTGOING IP is same.

Yes u can send some1 keylogger throw msn example, BUT order keylogger to work u have to open it. Thats why don't open things ur KO buddy sends.'

And I think I answered 3rd question with 1st also