i use KMeleon for more than a half year.
KMeleon is very good for hidding your Adresse and Surfing Acctivity. When you have the right options clicked in KMeleon Browser it is not possible for Google, Facebook,Youtube and co. to "hack your Adresse" and get every information they want from you, including NSA, PRISM etc.
But! KMeleon is threw its very small and easy to handl