In the case of cost per mille/click, the publisher is not concerned about whether a visitor is a member of the audience that the advertiser tries to attract and is able to convert, because at this point the publisher has already earned his commission. This leaves the greater, and, in case of cost per mille, the full risk and loss (if the visitor cannot be converted) to the advertiser.
Hosting – I suggest joining the WordPress Hosting and WordPress Speed Up Facebook Group and see what real (unbiased) people are saying about hosting. SiteGround was #1 in multiple Facebook polls and #1 in most Facebook conversations (this one too). People who migrate usually see significant load time improvements especially if they’re currently using Godaddy/EIG. I use their semi-dedicated GoGeek plan which comes with 4x more server resources than regular shared hosting (#1 factor in WordPress Optimization Guide) and have <1s load times with 100% scores in GTmetrix/Pingdom. SiteGround also does free migrations.
I expanded my SEO blog and started writing about hosting, cache plugins, and other relevant topics… while recommending SiteGround in each tutorial. I added social proof like this poll where they were rated the #1 host. Each tutorial was super detailed and tons of people found them helpful – many generated 100 visitors/day since the great content got them ranked high.
I personally prefer to do it that way--you can create a more convincing review that's more likely to make sales. It's not always possible or practical, though; for example, would you break up with your significant other just to test a product for getting your ex back? ;-) In cases like that, or if the product is expensive, it's usually best just to use the vendor's affiliate resources instead.
Focus on reviewing products that fall within your niche. Then, leveraging the rapport you have created with your audience and your stance as an expert, tell your readers why they would benefit from purchasing the product you are promoting. It is especially effective to compare this product to others in the same category. Most importantly, make sure you are generating detailed, articulate content to improve conversions.
You could start off by doing a simple Google keyword search to find out how many people are searching for your niche of interest. Similarly, if your niche focuses on digital products, a great place to do research is on ClickBank, which is considered to be one of the largest affiliate networks online. The end goal is to find a profitable niche and run with it!
If you are writing online your posts should be brief, clear, checked for spelling and grammar and consistent. Your blog may not have broad appeal if it has limitations in these, so your EBooks and public posts can benefit from a professional proof-reader, or extra classes in English, whether it is your first language or not. Whether you write a blog, a book or anything else, your only tool to deliver your message is language, and you should gain all the skills you can with it. If you don’t have time for this, use the services of someone with the best language skills you can find.