There’s nothing wrong with using your blog to make money. If you want to make imprints of your penis in playdough and sell it for $999 it’s cool. If someone is willing to pay you for that small of an imprint then there’s no reason you shouldn’t take their money. However, I do see a problem with doing posts about new products and services without telling your readers WHY you are writing about the topic. Whether you are being paid a flat fee, a free product or an affiliate sale, I personally think you should tell this to your readers about the compensation. If your a blogger with an audience, people trust what you say. Don’t abuse that trust by guiding people towards a product without giving them the information that your post may be tainted by compensation of some type.
To Blogosphere Readers: If you start seeing a whole bunch of posts about a particular product or service you can rest assured that at least some of them are written due to some type of compensation. Some products/services are great and some are terrible. Don’t just trust what a blogger writes. Do your due diligence before spending your hard earned money.