This will be not a seminar, but a free discussion of the open questions and some new ideas.
The discussion will be led by Gia Dvali and Sergey Sibiryakov.
All interested are invited to come and express their own opinions.
Suggested literature: hep-th/0606090, astro-ph/0605173, hep-th/0512260,
Please, feel free to suggest and bring other relevant literature.