a.o.a
please mujhay koi aisa tareeqa btaain k main koi ek na pasandeeda site apnay compter per khulnay say rok sakoon.
4 example:
main chahta hoon k face book mere computer per open na ho, to mujhay is ko block kernay ka tareeqa bataain.
main fire fox or google chrome se kerta hoon.