Sample email sent out:

Hi $FOO,

I got your name as a good person to contact about having a stop at the
$BAR during this year's computer tours.  They will be held on
Thursday, Sept 5, between 7pm and 10pm.  The format will be very
similar to last year.

We are expecting 40-50 undergrads, divided among three seperate tour
groups.  Hosting a stop will involve having someone there to give
three 15-20 minute demos, one for each tour group.  Hosting a stop is
a great way to get exposure to potential UROPs and to show people some
cool stuff!

We'd also like to invite you to join us for our guest speaker and food
after the tours (approximately 10pm).  I'll send you location when we
the details.

Thank you!

Jennifer Tu
jtu@mit.edu