The way the Church is in the year 2011, and for the past half century or so, there are many practices both in mass and outside of it that should not be done but which are done nevertheless. This is one of them. There is nothing written anywhere that it should be done. It is what we like to call a “liturgical innovation,” or, to be more blunt, a “liturgical abuse,” something made up by someone. This is wrong for the reason that the Church doesn’t prescribe it to be done, and doing it anyways is the priest saying he knows better than the Church, which isn’t the case.
I don’t know
why he told people to do it. Perhaps he has a personal attachment to it. Perhaps he’s trying to make people feel welcome. But whatever the reason, he is absolutely wrong, and it shouldn’t be done.
You should stop, yes. One thing that may set your mind at ease is that
everyone is blessed at the end of mass when the priest says, “May Almighty God bless you, the Father, the Son and the Holy Spirit. Amen.” There is no point in receiving a blessing in the communion line when: 1. the communion line is specifically for those receiving communion, and 2. everyone is blessed at the end of mass anyways and there is nothing you receive “extra” by being blessed twice.
Note, however, that you haven’t done anything wrong. Your priest has, and you cannot be blamed for his misdoing, because you didn’t know otherwise.
Please do read this:
forums.catholic-questions.org/showthread.php?t=543513
thread. It is a set of two letters on this very matter to and from the Congregation for Divine Worship and the Discipline of the Sacraments, which is the group in the Vatican responsible for mass celebration at a Church-wide level, among other things. The Congregation can be trusted before any other group. They say blessings should not be done for anyone in the communion line, and so they should not be done.
Remember, you receive a blessing at the end of mass anyways.