I don't believe so.
The advanced search option does not have an option for photographer/user name.
EDIT: But I believe that you might be able to use Google to do this.
For example, the following Google search will find images created by me:
site:fotolia.com geopappas
You could just replace my username with the ones that you are trying to find.
Thanks, I tried that and came up with no results. I don't think I actually have any images uploaded under the account name I'm checking but I need to make sure. I'm having problems (technical) resetting passwords and deleting accounts, and hoping admin can help.
