Absolutely! In fact, you can do it right on your mobile phone (via JuiceCaster). Below are some simple instructions to link your Juicecaster account with Facebook and Twitter. You only have to link them once - and you're good to go!
Facebook:
Login to your Facebook profile page online.
To add the JuiceCaster Mobile Status application to your page, go to the "Search" field and type in "mobile status"
Select the Mobile Status application branded JuiceCaster, and add it to your profile page.
You'll be prompted to type in your JuiceCaster username and password. Enter that info, and your Facebook account will be linked to JuiceCaster!
If you've forgotten your JuiceCaster password, go to http://www.juicecaster.com/getpassword.php
Twitter:
Go to www.juicecaster.com and login.
Go to your profile page and click on "Manage Connections" under "My Account".
On the Manage Connections page, click on "Add Connection" and select Twitter from the drop-down menu.
You'll be prompted to enter your Twitter username and password to link your Twitter account to JuiceCaster.