Post image to facebook wall (where to store image)

My app must publish screenshot to the facebook wall (as well as several other social netw开发者_开发知识库orks).

Where should I upload images that will be shown in the facebook feed?

Should I create photo album with my app images?

Or it's better to use free image hosting like ImageShack?

Maybe some other ways?

Which approach is better?

How about an Amazon S3 bucket. I've used this before for an image hosting app, it's not free but not expensive either and you have a lot of control.

http://aws.amazon.com/s3/

Very easy to set-up and you only pay for what you use.

Hosting the image on facebook may not be suitable for sharing to other social networks.

Depending on the number of uploads you may violate the terms of service for the free image hosting sites like ImageShack.