As you may have noticed, some of the links on Paul's blog are affiliate links - links that cause me to get a small kick-back if you buy the products and services they link to.
The reason I use this system is so that the blog itself generates some money - I'm offering free advice here, so it's reasonable to put in a little advertising. However, you should be aware of this: with the exception of the Google ads on my blog (that aren't part of the content), all of the services are services I would link to even if I didn't have an affiliate connection. They're services from companies I've grown to trust, that I'm a customer of. For that reason, for example, there are links to Register.com, rather than their rival GoDaddy.com - the latter pays better (I think, I must confess I've never checked, but I've noticed they have a lot of affiliates!), but I'm familiar with, and trust, the former. These are companies I would recommend in the context of my consultancy business, where I certainly do not get a kick-back.
In other words, I sincerely recommend these people!