Nothing that we'd really know of, because we never actually used any. :)
Having said that, I must admit that we did study the specs of some of those and found a few gaps here and there (at least so far as our requirement was concerned).
To list a few off the top of my head:
1) Returning of http response codes
2) Following 300 class redirects
3) Control over exact pixel size of the images
etc.
Why didn't you use them? A few missing features don't justify launching a whole new service, as the existing ones can just add the features in a day or so.
The primary reason we didn't use them was the lack of several features we needed.
We're not really concerned about the existing services adding the missing features - what we really wish to find out is whether or not there exist (at least a decent sized) market for such a service.
Comments
Nothing that we'd really know of, because we never actually used any. :)
Having said that, I must admit that we did study the specs of some of those and found a few gaps here and there (at least so far as our requirement was concerned).
To list a few off the top of my head:
1) Returning of http response codes 2) Following 300 class redirects 3) Control over exact pixel size of the images etc.
Why didn't you use them? A few missing features don't justify launching a whole new service, as the existing ones can just add the features in a day or so.
The primary reason we didn't use them was the lack of several features we needed.
We're not really concerned about the existing services adding the missing features - what we really wish to find out is whether or not there exist (at least a decent sized) market for such a service.