I want to host some pictures at low cost (less than flickr). I have come across Shareapic and Imgur. However, imagur strips the meta-data off of uploaded images, and I couldn't find much information on shareapic. Note: I want to retain ownership of my photos so Picasa web-upload won't work.
I recommend Flickr. You can even choose Creative Commons licenses to assign to photos based on what licensing rights you want to permit.
I use Fotki - less known than some but flexible enough and reasonable features and CHEAP.
You can set licence rights of your choice - they offer various variants of GPL and you can add your own in several says. I use non-commercial use only, no derivates, attribtution and suggest people email me. That does not stop copying but allows you to retain rights. You can password and/or hide albums etc.
In your account settings it says: Copyright holder:
Set the default copyright message for your account.
It can be overridden for a particular album or photo
From memory cost is about $US/10 per year if you buy a few years for unlimited storage, high resolution photos (may have a 10 MB limit?) . I think there is a 2 GB/day upload limit. Supports FTP an slideshows (and I seem to know more slideshow settings than any one else in public as I played and then asked them). All up its very good.
I have 90 GB and 119,000+ photos on Fotki at present. That's 'acceptable' [tm] for $10/year.
They offer album per photo view, thumbnails, slideshow and a very nice roll view like this - roll down - do not click until you see a photo you want to interact with in some manner.
I'm not exactly sure what your needs are, but if you are just looking for raw storage, try Amazon's/AWS Simple Storage Service.
It's primarily a paid service, but they have a FREE plan that will start you with 5GB of storage 15 GB transfer out / monthly.
You'll need to read over the page thoroughly to get a sense of what they offer and how they work, but for what they offer, I think they are worth the effort.