For you to have your data backed up in a different physical location for free.
Join the service and install the software on your device. Choose the files you want to be backed up. The same amount of space will be allocated for others’ data on your device. You can select multiple redundant backups, and you’ll need to provide the same amount of storage for others. Everything else is automatic.
It’s beautiful and inspiring.
Allow people to upload photos of their (and others’) balcony gardens. Arrange in multiple ways, by color, geography, season, etc.
Most cooking websites and apps center around the recipes. This one is different.
Have a cooking community website that is organized around the user and not a particular recipe. When you look up a recipe, first you check the recipe publisher’s member profiles, and then their recipes. You can follow them to get updates, communicate with them, rate them and their recipes, etc. As a user, you can also publish your original recipes or your version of any recipe you think is THE recipe for that dish.
So people can find new interesting ones and also publish their inventions.
A website that lists and shows classical mechanical puzzles, and allows anyone to publish their inventions. You can also get help solving these puzzles.
You have some art pieces hanging on your walls at home. It’s not by any famous or known artist, but you liked it when you bought it and now would like to sell it. You may need the money, or want to have some new art instead. There might be someone like you who would like to buy art because they like it.
A marketplace where you can list your home art for sale and also browse others’ home art to find something you like and buy it. You can even trade one piece for another if you find a partner for the swap.