I've been playing around with updating profile images through the API, and while the main twitter site updates instantly, it's clear that third party clients tend to cache profile images pretty aggressively. I'm in the process of testing this across a few different clients myself, but I was curious if there's a general rule of thumb about how often clients check for new profile images.
I've tried changing the upload file name to see if having a different link file name in profile_image_url would cause clients to get a new image, but that doesn't seem to do much. Of course every client is going to behave differently, but I was curious if people had a sense of what was normal in your experiences of changing your own picture and seeing it change in different clients, or with updating via the API itself. Thanks, Drew
