Friday's greeting means, to pray for someone about blessed Friday and it is not an issue, however, it is not right to consider it more important, to keep in practice regularly, and to promote it. Also it is not right to consider it wrong or bad those who are not greeting. Shariah does not allow these practices, Instead of just spending time in these things, we should do what has been proven about that day, for example participation in the Friday prayer and Friday sermons with all respected manners, the recitation of Durood Sharif and recitation of Surah Kahaf, etc.