(CNN) -- One million people registered for Apple's music-centric social network in the first 48 hours it became available in September. But some evidence indicates that Ping may be having trouble keeping their attention. However, a collaboration between Twitter and Apple could open a backdoor to a part of the corporate workforce that has been locked out of Ping during the crucial daytime hours. With Ping -- the social service that lives within Apple's iTunes program -- users can now post links to songs and albums to their Twitter accounts. When you find such a message in the Twitter.com stream, you can click the tweet to see a box showing details about that song from iTunes, along with a button for listening to a short snippet of the track.
@highlight
Users of Apple's Ping social network can now post updates from within the app to Twitter
@highlight
Messages from Ping can contain a small widget on Twitter containing song previews
@highlight
This move could open up Ping to corporate workers who don't have access to iTunes
Ping
Ping
Ping
Ping
Ping
Ping
Many @placeholder pages had little recent activity, aside from profile notes about new music purchases, which can be set to post automatically.
Ping
Ping
Ping
Ping
Ping
Ping
In order to use @placeholder, you must first create an iTunes account, which requires a credit card.
iTunes
iTunes
iTunes
In order to use Ping, you must first create an @placeholder account, which requires a credit card.
Ping
Ping
Ping
Ping
Ping
Ping
Next, and here's what could be a major hindrance for office workers, you must have the iTunes software installed on your computer in order to use @placeholder.