Here is my profile so far if you want to test following…

Hey, cool concept. Some feedback:
0. You have a typo, should be bookmark.club instead of bookomark.club in your main post
1. Clicking "explore" does nothing - sounds like it's just not ready yet?
2. I would put your social links at the bottom somewhere, seems weird to have an IG link in the main navigation
3. I'm not clear on what "Advanced / ranked Stacks" means. I kind of get that a stack is a list of your favorite books, but why would I pay to rank them, and against what?

Hey I went to test--I think the url might be down right now.