account
In the context of Yahoo! GeoCities, account generally refers to a combination of a user name and password that authorizes access to a set of features. An email account, for example, is a password-protected repository for email that includes a mailbox and one or more unique email addresses. A user account is a user name/password combination that need to sign in to Yahoo! and your GeoCities plan.
add-ons
Add-ons are elements that you can include on your web site to improve interaction with your visitors and make your site more informative and appealing. Easy-to-use add-ons such as guestbooks, counters, and maps are available to all GeoCities users. Learn more.
"Add to My Yahoo!" button
An "Add to My Yahoo!" button is a convenient option available with your Yahoo! 360° blog tools that makes it easy for readers to subscribe to your blog content. Viewers can click the button to add your blog's RSS feed to their My Yahoo! pages, where they can scan your latest posts. Learn more.