You can have users define their own with this one: http://www.wp-plugins-db.org/plugin/localised-comment-avatar/ There was a plugin for mybloglog members but it looks to removed from the publisher blog. There has to be others out there...
I think login wants to let users post images in the comment body, not next to their username. Haven't seen a plugin like that, perhaps you can allow <img> tag in the comment?
I just re-read the OP and your right. Bah beer and DP isn't good. To be honest I don't think I ever seen it done before or have seen such a plugin.
Yes, thats it, images in the comment body. But I need people who dont know what the <img> tag is to be able to post too.
have a look through the settings file (its one of wp core files) (i think its in wp-includes or the root folder) and in the file you can define which html tags are allowed to be posted in comments. sorry i cant be more specific as ive not used wordpress in a little while but im sure its in the settings file somewhere.
Well, you can insert a little paragraph explaining how to use the tag in the comments.php (or create a little pop-up linked from "Want to insert an image in your comment?") I know this is not a very good solution, but since nobody seems to know about a specific plugin...
Yes, its possible maybe, but the image have to be uploaded also, not just hot linked from another site.
In this case, you better have a custom plugin developed. If indeed there are none out there that can handle this.
Images? Why don't you move to the next level? Make it possible for them to record videos - http://codex.wordpress.org/Plugins/Video This is the next big thing!!!
I am telling you that among these plugins you can find really nice stuff that can enhance your blog. And yes, there are some tools that can convert your blog to a vlog.
take a look @ http://mu.wordpress.org/forums/topic.php?id=5441 wpmu (wordpress multi-user) is slightly different but it may work.