It's basically collection of designs that I like. Because I hate to visit them everytime I need inspiration. So, I took full-page screenshot from each one, and put it online. Maybe, someone find it useful too.
> Would I want to come back to this site because it is updated?
I just launched it 6 hours ago. I'll put more websites everyday. 3-5 website a day.
> How would I find something that connects to a project I am doing?
Uidea has collections: ecommerce, iot, saas, etc. You can browse by collection.
> ... maybe some info about how I could make my own sites/apps/documents that look like that.
That's what I'm going to do in the future, where people can email me their website they're working on, and I'm giving feedback on how to make it look better and usable.
If you want, I can give you a feedback right now. Email me: hello [at] uidea [dot] co.
Thanks for your questions.