Accept # -- Both members become each other's Amazon friend and appear on each other's list of Friends.

Decline# -- The sender's invitation is removed from a list of pending invitations on the invitee's profile. The sender isn't notified the invitation is declined, and is free to send future invitations.

Decline and block# -- Declines the invitation and prevents future Friends invitations. The sender's name appears in a "Blocked People" list visible to you on your profile, and you have the option of unblocking them later.

Ignore# -- The default option, and probably the most popular. The recipient ignores the Friends invitation and deletes the e-mail.

Amazon users have the option of receiving friend invitations only from people who know their e-mail address and enter it correctly into the invitation form. Here's how to manage this setting:

On your profile page, scroll down the middle column to the section labeled #Amazon Friends & Interesting People#.

Click See your pending invitations.

At the bottom, in the section labeled #Blocking Preference#, check the box #Block invitations from people who don't know my e-mail address# and click the yellow button #Save preferences#.