The Apostles of Perpetual Adoration is an Association of Christ's Faithful that was founded by the Archbishop of Perth and Father Douglas Harris in 2006. I am involved with this apostolate. They have a blog for more information which is linked at the bottom of this post.
The Apostles of Perpetual Adoration believe that the new evangelisation must be Eucharistic Evangelisation. The Hebrew word for good news is biser (bet,shin, resh) and the word for flesh is basar (bet,shin, resh) (used for the sacrifical lambs and for the Eucharistic flesh of John 6). Thus even in the beginning of the Church evangelisation was linked to the Eucharistic mystery. According to St Peter Julian Eymard Our Lady was the first one with her ladies to practice Perpetual Eucharistic Adoration. This practice was one of the most mysterious secrets practiced by the early Jewish Catholics- Adoration of the Divine Presence.
Brother Gilbert of the Divine Presence in the APA habit