Interesting. Though I've got very little interest in Lacan's work itself, I could see this being a pretty good filter for finding smart/disciplined therapists who are able to address more... abstract concerns (then again, maybe it's better for some of us to be forced out of abstract territory for therapy).
Lacanians are focused, disciplined, and smart. There aren't many of them, either.
Dig around, read a little about Jacques Lacan; if it piques your interest, give it a shot.