Personnaly I support option 3. My reasons are:
- Most of these duplicate handles aren't by accident but rather are a deliberate attempt to break rules agreed by the vast majority of the members.
- Most of the posts emanating from these duplicate handle have zero value or even have a negative value.
- Associating all posts under a same "unified" handle will help us understand the agenda, the motives of these posters.
- I agree my most of your banishments. Banished posters shouldn't be allowed to repost under a different handle and have their posts in circulation even for 24 hours, specially if you give them 24 hours after their last access. It brings the possibility for a "ill-intended" poster to generate posts under many different handles and let them "manipulate" public opinion.
Finally I want to express my thanks to you. You have a very hard job and we all know you aren't doing it for the money ... . Thanks