Lurk650
Headphoneus Supremus
You only have to look how Amazon's review have been polluted with free sample reviews, most of the earphones are reviewed by people who's reviews are usually about toasters not earphones.
I was sent a pair of Banjos because I was less than flattering about a pair of Pros, they asked me to write a review about the Banjos after getting them. As much as I like the Banjos, there's no way I'd write a review unless I'd paid for them myself. I offered to send them back but they said I could keep them.
There are reviewers on here who aren't influenced by the free samples though, in fact I suspect some are a little over critical to remove any shadow of doubt over their objectivity.
Brainwavz has sent me the Blu 200, S5 and Jives. Only got the 200 done so far and I gave an honest review, it's good but has issues. All 3 are solid though.