NEW YORK -- In yet another change that upset users, Facebook Inc. has replaced the email addresses users chose to display on their profile pages with @facebook.com addresses.
Previously, users may have displayed their personal yahoo.com or gmail.com address to let people know how to contact them outside Facebook. Now, Facebook has hidden those addresses and put a Facebook email listing in its place.
The changes raised users' suspicions. By hiding other email addresses Facebook can keep its audience even more captive. Sending an email to a Facebook.com address will land the email in the messages section of a user's Facebook profile.
The more people use Facebook to communicate, the more the company can target ads based on the conversations they have on its platform -- just as Google targets ads to Gmail users based on text in their emails.
"They've got an email service that no one is using," said Forrester analyst Nate Elliott. Getting users to send emails to and from Facebook deepens their connection to the site, he added. "This is a way of encouraging use -- it's just a rather crude way."
The email change was first pointed out by bloggers over the weekend. The exposure led to complaints from users, mostly on their Facebook pages and on Twitter.
In a statement, Facebook said it is giving users Facebook.com email addresses "because we find that many users find it useful to connect with each other, but using the Facebook email is completely up to you." It added that the email address people use to log in to Facebook or receive notifications won't change.
Users who are bothered by the change can reset their profile. Facebook didn't delete the previously displayed email addresses.
Here's how to revert to the original address:
Click on the "about" section of your profile.
Look for "Contact Info" and click on the edit icon on its right-hand corner.
Change who can see your email address and which email addresses they can see.
The Facebook.com email address allows users to communicate with outside email addresses via Facebook, but it's unclear how many people use the feature.
Over the weekend, Facebook added a feature that lets users change what contact information is displayed on their Timeline directly from the Timeline -- without having to go into their account settings. In rolling out this change, the company defaulted everyone's displayed address to Facebook.com.
Menlo Park, Calif.-based Facebook is well known for making changes to its Web site that occasionally irritate users. Some users are still holding off on switching their old profile pages to the Timeline, which lists users' shared life events, updates, and photos in chronological order, dating to their birth. In 2006, there was a big uproar over a now-central feature of Facebook, the news feed that tells people what their friends are doing.
"It's pretty emblematic of Facebook's mode of operation. Take action and apologize later," said Debra Aho Williamson, an analyst at research firm eMarketer. "They seem like they pulled the trigger without telling everybody. It's going back to the way they were operating a few years ago."
Facebook's stock price rose more than 3 percent Tuesday to close at its highest price since May 21, its second day of trading.
The stock gained $1.04 to close at $33.10. The stock was initially offered at $38.