[PLUG] tor browser

[jayant ogale]

hi,
recently i read about tor browser. they claim that user identity remains anonymous,it not possible to locate the users location, it is not possible to store the browsing details.
also they claim that it not possible to intercept and read your mails and other details.
is it true? i mean has anybody verified these claims [technically]?
i will be interested to know
1] what are the advantages and disadvantages of using tor browser?
2] internet providers are supposed to store our internet browsing details. if the claims are true how do they do it?
3] similarly they have come up with tails o.s. does this o.s. has any specific advantages as compared to other o.s.?
thanks,

jayant