AMEX Starwood card ($65/y) is the best card for the hotel rewards. The hotels that are part of their network are great. The link to the card is here: http://www262.americanexpress.com/business-credit-cards/busi...
Check out the hotels that are available on, and how much each night in a hotel is: http://spg.com
You can get some really great hotels for 7000-10,000 points per night. Every dollar spent = 1 point, and that can go up as you spend in different places.
AMEX is very startup friendly. This particular card has free employee cards. When you get going further in your business, look at a few of their charge cards (which are not credit cards - you have to pay them off in full each bill). The AMEX Gold is one of them.
Moniker is my favorite hands down: http://moniker.com They are also a favorite of domainers for their features and support. In my opinion they have unmatched security, and will fight to keep your privacy when using whois protection (unlike another popular registrar listed here as an alternative to GoDaddy, from my own personal experience).
OS/2 is still in use in NYC's subway MetroCard system... shocking.
The city is probably being squeezed out of tons of money to maintain technology that is ancient.