Not sure the following is part of your usecase, but you may want to consider it.
First off, you might want to add something that indicates what kind of images are "valid". For example, I would love a site like yours where I could post my RAW CR2 files. While those are rarely good exactly like they are, they can be useful to show someone as an example of unretouched work, or as a guide to where I'm starting for someone to indicate "yes, but I really wanted you to get an angle looking from the south".
Second, I would love to have your service or some other one where I can pay a semi-ridiculous fee, and know the same image will still be available in 10 years. Right now I have about 1TB of images, and I wonder if anyone would bother to even look through them before just deleting the directory if I weren't around. It would be nice to know they are still somewhere. My current "workaround" is to post images to one of my blogs that I know Archive.Org backs up.
Your first use case seems perfect for Dropbox... just share a link to the specific files in question.
The second use case, I'm unaware of anything that legally provides that guarantee (i.e. with an SLA), but if you trust that Amazon will be around for 10 years, you could just sign up for an AWS account and put the images on S3 yourself. I'd put more stock (literally and figuratively) in Amazon than Archive.org for data reliability.
The current limit on image size is 10MB, so posting large raw image files won't be possible here.
The purpose of this app is to provide a quick way for people to share their images, so the use case you describe does not really align with the goals that I have. I'm sure there are services that are better suited for what you want to do.
First off, you might want to add something that indicates what kind of images are "valid". For example, I would love a site like yours where I could post my RAW CR2 files. While those are rarely good exactly like they are, they can be useful to show someone as an example of unretouched work, or as a guide to where I'm starting for someone to indicate "yes, but I really wanted you to get an angle looking from the south".
Second, I would love to have your service or some other one where I can pay a semi-ridiculous fee, and know the same image will still be available in 10 years. Right now I have about 1TB of images, and I wonder if anyone would bother to even look through them before just deleting the directory if I weren't around. It would be nice to know they are still somewhere. My current "workaround" is to post images to one of my blogs that I know Archive.Org backs up.