No. These sites all have a level of editorial control (or we wouldn't work with them!)
Each one has different rules on what is acceptable for publication, but in general: no pharma, adult, casino/gambling, etc. links, and the pages we link to should offer some legitimately useful information.
They can be promotional, service pages, however non-promotional, blog/resource pages are always preferred, and necessary as a secondary suggested target URL.
If you’re concerned about whether or not a specific URL would be accepted by sites we work with, Contact us to discuss before you order.