Right now, you have to go to a third site, enter a promotion code, something else.

现在做网络广告的话，必须进入一个第三方网站，输入优惠码，或是诸如此类的东西。

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On that Web site people can enter their zip code and find opportunities to volunteer in their area or local charities to which they can donate.

CNN: White House releases Thanksgiving public service ad

Entrepreneurs simply choose a username and password, enter an e-mail address and zip code, and sync the site to their QuickBooks software.

FORBES: Your Free Online Accountant