When you upload a picture, it will remain hidden until you add a description (this ensures that every picture has accessible alt text). With a description in place, the picture will appear on the some.pics landing page and on your personal page (which you can access by clicking your omg.lol address wherever it shows up on the site).

— Adam Newbold, Picture Sharing and Discourse

Not only another cool feature for omg.lol but a great way to actually support accessibility. It would be great if other platforms, including Micro.blog, used a similar system.