And also shows immediate casual familiarity with his followers. We've seen fairly aloof or screw around gods in OOTS thus far, with the exception of The Dark One, who's still been pretty unseen or stiff with his followers aside from the "don't screw this up", and Hel, who's more of an immediate petty mistress.
The gods thus far have seemed to see humans as sort of a cross between ants and prayer batteries thus far, with even the good gods being pretty inaccessible and talking about the lives and souls of their followers in more abstract moral terms than anything. So to have Thor meet two of his followers in person for the first time and immediately talk about knowing who Minrah is and reference something personal to her in a way that immediately put her at ease without revealing personal information to the bystander is a pretty cool thing to do, particularly for a god who many forumites had a... low opinion of before this.
My $0.02, anyway.