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Registration is now available online! You will be able to pay by credit card. Note that accommodations should be booked separately (as October is peak season in Napa, it is advised to book immediately): see the accommodation page. If you have any questions regarding registration, please send an e-mail to

To register please use the CIKM 2008 online registration system:

* Early Registration ends August 22nd (23:59 EDT(GMT-5)) 2008
** Late registration ends Thursday October 2nd (23:59 EDT(GMT-5)) 2008

Conference registration includes:

Tutorial registration includes tutorial notes and refreshments for all breaks.

Workshop registration includes electronic proceedings and refreshments for all breaks. Member and Student Rates

Member and Student Rates

To qualify for member rates, you must be a member of ACM, ACM SIGIR, ACM SIGWEB. There are discounts for students and student ACM/SIG members. You will need a valid ACM/SIG Id to qualify for ACM member rates. Students will need a valid Full-time Student Id with current registration marked clearly or a letter from their department head certifying student status. The documents must be uploaded using the RegOnline facility.

Terms of Payment

All fees should be paid in advance in US dollars, using credit card (AMEX, Mastercard, or Visa). Full payment must be included with registration. Partial payments and purchase orders for future payment will not be accepted.

Wire transfers are permitted. Wire transfer instructions are provided in RegOnline during the registration process. If paying by wire transfer, your registration will be regarded as incomplete until we have received full payment of your outstanding registration fees.

Terms of Cancellation

Requests for registration cancellation must be made in writing and mailed to the following address:

All refunds will be processed and mailed following the CIKM 2008 Conference dates. Refunds will be made in accordance with the following schedule:

Partial Registration Fee Refunds

Partial refunds in registration fees resulting from registration changes (e.g., changing from student non-member to student member) will be charged a processing fee of $30 plus a service charge of 4% of the refund amount.

Please email requests for partial registration fee refunds to

All refunds will be processed and mailed following the CIKM 2008 Conference dates.

Visa Support Letter

The Association for Computing Machinery does not issue formal invitation letters for visas. However, ACM can issue a visa support letter. For visa support letters, please send all requests to Laura Bucci at with the following information:

  1. Name as it appears on your passport.
  2. Residence and a ship-to address if different.
  3. An indication that you wish to attend CIKM 2008, even if you are only planning on attending a specific workshop (i.e. iNEWS '08 or DOLAP '08).
  4. Registration confirmation number
  5. If you have any papers accepted for the conference, please indicate whether you are the sole author or a co-author, and provide the full title of the document.
  6. Fax number (**Please note** Visa Support letters are not issued via email).
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Bronze Supporters
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