I am not sure if it would be possible but I am having a lot of people struggling with imbedding images in their posts using IMG using free services. I assume it is the way these services format their links:
http://f3.yahoofs.com/users/420d2b56z1c421539/a67fre2/__sr_/856cre2.jpg?phAZd.EBfO68jiMdAnyway around this in how it is handled? I would like for them to use the File Manager built in but most do not even try.