Just wondering if someone know someone who just posts feet pics on OF? Is the demand great? I have sold some of my feet photos before so I know some people are willing to pay any amount for it. But I’m not sure if foot fetish is a popular category on OF.
Feel free to share any experience or comments regarding this 
There are already a few pages on OF for people who loveees feet. I just discovered this category when looking through reddit. Here it is 
I don’t think I answered your question, sorry. But if that’s what you want to do, then just go and do it. The demand might not be that great yet, but with good marketing you can have a lot of subscribers.
This encouraged me to continue with feet content. I have a few ideas now 
There are actually quite a few, including all the feetfetish subreddits (many submissives are also foot fetishists), /femdom, /femdomgonewild, /femdomhumiliation, and /bdsm (which is larger but contains femdom stuff). I would estimate that I discovered about 30 or 40 total. Look for femdom-specific content; practically every kink has a subreddit (/girlswearingstrapons, /sph, etc etc).