Unused Indexes in sql server 2005

I find 3 articles about the subject.

http://blog.sqlauthority.com/2008/02/11/sql-server-2005-find-unused-indexes-of-current-database/

http://www.databasejournal.com/features/mssql/sql-server-index-t-sql-statements.html
Script number 8.

and Gred Norman in our site.

Not all of them use the same criteria, specially Script number 8.
Testing the 3 scripts, sqlauthority and Greg are similar (all indexes are used), but databasejournal suggest to delete a lot on indexes.

What do you think?

Good one luis, why not send them an email to ask further.

Done to Database Journal. Waiting for some answer.

Don´t believe they give me some answer.

Would be interesting to see, if they care, and if so, what their answer will be.