This post will raise several questions/issues on which I want
community feedback.

Background: Inspired by Tim Post's offer , I++ decided to
ask for swag to distribute at the International Congress of 
Mathematicians in Seoul this month.
The swag has been printed and will be shipped to South Korea soon.
In addition to giving out goodies, I intend to do some promotion
of MathOverflow at ICM to get some more people who are interested in
mathematics interested in our community.

**Main Question**:  Do we want more people, and what kind?  I suspect
most attendees will be professional mathematicians, but there will
also be a substantial fraction (more than 1%) who will be Korean
high school students.  I want to make the same pitch to everyone at
ICM, but if there are marketing experts here who can guide me on
selective promotion, I am willing to try it.  If there are reasons
to downplay or mute promotional efforts, I would like to hear them.

Intellectual Goodies:  I want to crowdsource a list of questions
(preferably unanswered) which are of high quality,
based on the 19 areas of mathematics
 represented at the Congress,
plus whatever else you feel is not properly represented.
(Francois Dorais has already started a related post :
that will be useful, but I also want questions that are good and
possibly answerable and may miss the final cut of Best of MO.)
Please suggest a good question and associated area number, or more than one.
I will then make that list available as a selling point.  (I am
willing to take new questions, but they need to be posted by Day 0
of the congress.) If there is a way to use answered questions 
(MathOverflow Success Stories?)
as a selling point, I would appreciate knowing details about that.
Here are some that might do, corrections on subject area are welcome:

* comb
*  alg-top,k-theory
* func-analy, banachspaces
* diff-top,
* history
*  analysis?
* comb

Selling Points:  I see the forum as a place to get questions
answered, references resolved, collaborations started.  I will
emphasize that MathOverflow is not Wikipedia or a tutorial or
general help center.  I could use more characterizations (brief
if less accurate) of what the forum is so that I can explain it 
well to people who consider joining.  Can you help me with the
most important Do's and Don'ts to give to a potential new member?

Social Gathering:  If you are attending the Congress, I+++ invite you
to look me up, especially at the Welcome Reception and Conference
Dinners.  I am setting aside some mugs and t-shirts for
Plenary and Invited Speakers, and I hope to have some left over
for those giving Short Communications or being active MathOverflow
participants.  If you don't mind me knowing your email, you can
contact me directly using the gmail account listed below++++.  You can
also send such detail through the moderators AT if
you prefer that.  I may be able to set aside something for you, but
only if I know who you are.

Promotional Help:  For those who believe in the cause, there are ways
to help this effort even if you aren't attending (statistics gathering,
welcoming new accounts, offering quick guidance/minimal rep). I can't 
offer swag for barter or efforts, but I know a guy who has swag... .  
Contact me at the gmail account below if you wish to help.

Timeline:  The Congress Day 0 is Aug. 12 (UTC+9), when registration,
welcome reception, and the first major promotional efforts will
occur.  If you want to jump on board, act now! 

(Spoiler: signature fans will be disappointed.)

Gerhard Paseman, 2014.08.06

   ++ yes, I know this outs a pseudonym.

   +++ a mailing from the moderators to MO members/ICM speakers is planned
for later today.  If you get missed in that mailing, it's probably my fault.  Sorry!  Contact me or the moderators if you have a swag desire while in Seoul.

   ++++ droidgerhard