From the LJ Abuse team:
Additionally, if you believe anyone on your Friends list may have provided their login information to this website, we can only advise that you remove them from your Friends list. This website will have access to your Friends-only entries as long as any person on your Friends list has given the site access. If any content is present on Frienditto which you do not wish to be there, you will need to resolve the issue with that website.
If you chose NOT to remove yourself from Frienditto, please let me know so I can adjust my filters accordingly. Thank you.