I am developing some PHP code that requires displaying Chatter photos on a web page. The code does not maintain an active browser session with something like OAuth. It simply logs in with the SOAP API, accesses the data, and displays data. Since Chatter photos are stored internal to Salesforce.com and require an active session, this causes an issue. Well, I found a great blog posts that solves this problem. Take a look here if you ever run across this problem.
Posted in API, Chatter, PHP, SOAP | Comments Off on Showing Chatter Pictures without being actively logged in