Does AOL have a recommended way to authenticate users for the Web AIM API for both client applications and browser applications?
Authenticating OpenAIM users relies on a separate open API at AOL called OpenAuth. One of these APIs is called clientLogin which is designed for developers wanting to authenticate AIM users via desktop or mobile applications. If you are interested in developing Adobe AIR, Microsoft Silverlight, Objective-C, or .net/C++ AIM applications, OpenAuth’s clientLogin is for you. For browser based AIM development projects OpenAuth has a great set of APIs geared specifically for web authentication. You are prohibited from using clientLogin for browser authentication per the Developer Agreement.