'buy now' links at the end of reviews with referral tags in the URL may not be a bad place to start.
Also, to gain a larger market, I recommend better OS X coverage and software reviews. (I'm mostly Ubuntu, but I use OS 10.4 on my eMac)
Distributed audience benchmark contributions might not be bad either.
'get a free phoronix contributor account, two months ad-free for submitted benchmarks'. ..PTS should enable people to do that, if they meet a stated need and adhere to the editor's standards...