Hi, thanks for the great database/API, I'm a long time fan

I'm trying to decide how to cache/synchronize with themoviedb

Initially I was going to cache the main image for every object, and not use the additional images, because linking back to themoviedb or imdb is much simpler

However currently I'm not even sure about that

At what extend is it allowed to use the http://image.tmdb.org/t/p/original/ images? (My deduction was that these images were to be used only for servers to cache and not to integrate/serve to others) I know that these are very vague topics, but let me ask some clear questions instead:

1) Is there a rate-limit for the http://image.tmdb.org/t/p/ requests, I'm asking this for caching. Let's say I'm pulling of the information for 10 movies per minute, would I be rate-limited if I pull of 10+ images after each request to cache the Person photo's too?

2) Does "append_to_response" count towards the API rate limit?

Thanks a lot in Advance