Computa todas.
Seguro. Pero no es accesible para los ususarios. Sólo para twitter.
Saludos!
Gracias por responder. Entonces Twitter debe de seguir una política similar a la de Wikipedia:
"Because of how browsers work and similar to other major websites, we receive some information automatically when you visit the Wikimedia Sites."
"When you visit any Wikimedia Site, we automatically receive the IP address of the device (or your proxy server) you are using to access the Internet, which could be used to infer your geographical location. We keep IP addresses confidential..."