Right now, it does not. There is no advertising on this site, and there are no affiliate links on any page. Nothing here is paid for and nobody pays us to say it.
That is a statement about today, not a promise about forever. This site costs money to run, and at some point it will probably carry advertising, affiliate links to retailers, or both.
When that happens, here is the standing rule. Any link that pays us will carry a visible label and a rel="sponsored" attribute in the markup, and the page it sits on will say so in plain words. You will never have to guess which links are commercial.
What it will never change. The dimensions, charts and calculations here are standard measurements. A queen mattress is 60 by 80 inches whether or not anyone pays us, and a 12 by 14 ft room is 168 square feet regardless. No commercial arrangement will ever alter a number on this site, and no product will be recommended because it pays better than another one.
If you ever find something on this page that is out of date, or a link that pays us and is not labelled, that is a defect and we want to know about it.