This is a very common way to promote offers. For example, you will often see a blog post with links to certain products or services. If the reader clicks through and makes a purchase, the blog owner will make a commission. These in-text links blend in with other content on your site and are a great way of promoting an offer within your content, without being over-the-top salesy with banners.
You do not need millions of page views per month to make money blogging, but it is something you will want to increase if you hope to improve your income. Once you understand what your readers want, understand how to effectively reach out to companies for partnerships, and know how to charge the correct rate, you can make a good income online, regardless of the number of page views you receive. Increasing your pages view is necessary to make money blogging, but there are many different ways to grow that number. You'll receive a PDF outlining exactly what you must do in order to increase your page views.
Affiliate marketing is also called "performance marketing", in reference to how sales employees are typically being compensated. Such employees are typically paid a commission for each sale they close, and sometimes are paid performance incentives for exceeding objectives. Affiliates are not employed by the advertiser whose products or services they promote, but the compensation models applied to affiliate marketing are very similar to the ones used for people in the advertisers' internal sales department.