From the New Jersey Jewish News:
“We’re calling it ‘A Spiritual Day in Brooklyn,’” said Rabbi Eliezer Zaklikovsky, religious leader of the Chabad Jewish Center of Monroe Township, a division of Chabad Lubavitch of Greater Mercer County, as the crowded bus made its lumbering way to New York. “The main thing is to have people have the experience of praying at the gravesite of a tzadik. They write a letter to the rebbe, give charity, meditate, read the note, tear it up, request a blessing.
“I’m hoping they appreciate the experience of being able to pray at the graveside of a spiritual giant,” the rabbi said. “I want people to have that experience, to bring them closer to God and the Jewish community, and to leave a little bit more inspired.
“It’s a spiritual type of experience, on the one hand,” he added. “On the other hand, there’s a lot of nostalgia in Crown Heights. They’ll see what it’s like in a Chabad community. There’s a lot of mystique involved. It’ll be a nice day of nostalgia and inspiration.”
The sad thing is Zaklikovsky is not a messianist and is very close to the head of Chabad, Rabbi Yehuda Krinsky. ( Note Zaklikovsky calls 770 "Beis Agudas Chasidei Chabad.")
Writing a letter to a dead rabbi and asking for the dead rabbi's blessing is official Chabad theology.
Hat tip: 'Minnesota Twin'.