Phil here… Since I believe in transparency, I want to make sure that you all know that many of the products and links to those products on this site are affiliate links, which means that I will earn an affiliate commission for any purchases you make via those links.
Not every link to a product is necessarily an affiliate link, but it would be too tedious and time-consuming to label each and every link as an affiliate link or not, so you should assume that any links leading you to products or services are affiliate links that I will receive compensation from just to be safe.
Having said that, I also want to let you know that I only promote those products or services that I have investigated and truly feel deliver value to you. For example, my book reviews have Amazon affiliate links, but I am only bothering to present and review books that I own and truly believe would be beneficial to those interested in geometric art.
Please note that I have not been given any free products, services or anything else by these companies in exchange for mentioning them on the site. The only consideration is in the form of affiliate commissions.
If you have any questions regarding the above, please do not hesitate to contact me by using the contact page.
P.S.: To satisfy Amazon in particular:
I am a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.