Pandora will share to your profile by default. If your profile is public, Pandora will also share to your followers' music feeds.

On the Web:

When you'd like to share a song or station, click 'Share...' under the album art, or click 'options' under the currently playing station and select 'Share this Station.'

To share on Facebook and Twitter, click 'sign in' next to the Facebook and Twitter icons.

To share a song or station by email, click 'Email instead' on the bottom left of the dialog box.
 
On the iPhone and iPod:

To share a track or station by email, Facebook, or Twitter, tap on the triangle that is located between the thumb buttons.
 
A pop-up menu will appear. Tap on ‘Share’ and you will then be given the option to share the station or the track.
 
After you make your selection, specify which service that you would like to use for sharing: Facebook, Twitter or Email Instead.
 
To share with your social networks, tap on the Facebook or Twitter button, then tap on the ‘Share’ button in the upper right corner to post the selection to your wall or feed.
 
To share your station or track by email, select ‘Email Instead’. You will then be prompted to enter the address of whomever you'd like to share the track or station with. You can also press the ‘+’ button to choose from one of your existing contacts. 

On an Android: 

From the Now Playing screen, touch the menu icon (3 vertical dots) in the upper right corner. Then select “Share”.
 
On the next page, select to share the station or track. We’ve added a default message but you can edit it to say whatever you would like.
 
Once you make your selection, tap on the Facebook or Twitter button to specify which site you would like to use for sharing.
 
Finally, touch the arrow in the upper right corner to post it to your Pandora activity or the social media site you have chosen.
 
If you prefer to email this to a friend, select the option to  ‘Email Instead.’ Select the app you wish to use to complete the action (such as Gmail or Yahoo). Then enter the address of whomever you would like to share the track or station with.