If this post makes the front-page then I'll give 20% of the final sale price to charity/good cause (suggestions welcome) - whether or not any of you actually bid :) The auction ends tomorrow:
https://www.sedo.com/search/details.php4?domain=pay.tel
The .tel TLD is designed specifically for the purpose of publishing contact information, keywords, and location data through the DNS network (see http://telnic.org to learn more).
Pay.tel would be ideal for some kind of mobile based payment platform, which is why I thought it might appeal to the HN crowd.