Adding Facebook Account to the Nexus One

1. From the Home screen
2. Goto Settings > Accounts & Sync > Add Account
3. Select Facebook
4. Fill in your account login
5. Answer the various questions to complete the adding of the account
   

Your contacts are now automatically in sync with their Facebook! If auto sync is turned on, then your contacts with Facebook accounts linked will have their status updated everytime you click on them.

Syncing contacts without same name on Facebook

Are you encountering some mis-matched names on your contacts not being able to sync with their Facebook accounts? Here is how to manually link them together:

1. Find the contact
2. Long press the contact > Edit Contact or Menu > Edit contact
3. Menu > Join
4. Select the relevant contact from the suggested list

Note that this process will make your contact take up the name on their Facebook by default.