I got (and, obviously, accepted) a review order on ReviewMe from a site called RevResponse. The site's homepage makes the business idea sound somewhat complicated, but it isn't: you, the blogger, get paid for having your readers subscribe to trade publications and white papers for free. Since these publications are trying to build their targeted circulation so that they can charge their advertisers more money, not everyone gets the free lunch -- you need to qualify to subscribe. I don't know how the qualification process works and hence how lucrative this affiliate model is for bloggers, but if everything works as advertised, why not.
But check out the range of publications the service offers. There is some interesting ad-related stuff: Brand Packaging, Successful Promotions, and even Crain's Creativity. You can also try to subscribe to magazines that sound very cool but that you would probably never buy without a good excuse:
- Church Production (about "church's use of audio, video and lighting equipment")
- Church Solutions ("sophisticated, insightful articles on construction, design, staff management")
- Meatingplace ("written and edited for red meat processors")
- Cranes Today ("serves the whole of the Crane Industry")
- Wraps ("inspiring the vehicle and building wrap professional")