These are prophetic words shared during service times that were for the local church, the church at large and/or unspecified individuals.  As directed by the Word of God, each prophecy should be tested against the Word of God, the Bible, and should be confirmed in an individual's life by the witness of the Holy Spirit.  It is advised that any individual should NEVER act upon a prophetic word until these tests (the Word and the Holy Spirit) are confirmed.  It is also recommended that you should share any prophetic word that you receive with someone that you trust to help you to test and confirm it.