The Free Skype Credit deal has expired. These are the current Skype deals:

• Skype - Get a unique SkypeIn number to receive calls from phones or mobiles from anywhere in the world at local rates $18 for 3 months, or $60 for 12 months (Posted on 7/24/09 and Expires on 12/31/15)
• Skype - 50% off SkypeIn online number w/ a SkypeOut subscription as low as $2.95/month (Posted on 7/23/09 and Expires on 12/31/15)
• Skype - Unlimited Europe Calling Subscription from 2.95GBP/month (Posted on 10/10/08 and Expires on 12/31/15)
• Skype - Unlimited World Calling Subscription from $12.95/month (Posted on 10/2/08 and Expires on 12/31/15)
• Skype - Skype for Business: Free Conference Calls, Video Calling. Free calls & Low rate Local Calls (Posted on 10/2/08 and Expires on 12/31/15)
• Skype - Skype Store Best Sellers (Posted on 10/2/08 and Expires on 12/31/15)
• Skype - Free Skype-to-Skype calls on your mobile w/ the 3 Skypephone Mobile (Posted on 10/2/08 and Expires on 12/31/15)
• Skype - Unlimited US & Canada Calling Subscription from $2.95/month (Posted on 10/2/08 and Expires on 12/31/15)

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I just got this email from Skype (it's legit). Thought I'd pass it along here just in case (a) you weren't already a Skype user, (b) you're not on the email list, or (c) you didn't see the email yet.
Sometimes not all of the people you want to talk to are on Skype. That's why we have SkypeOut, a pretty cheap way to call landlines and mobiles around the world at local rates. What's more, we're giving away 10 minutes of Skype Credit today to anyone who would like to try SkypeOut for free. We're nice like that.
You can claim 10 minutes of Skype Credit today and try SkypeOut for free. Hurry, you need to claim your free credit before midnight tonight. If you're in the USA, you'll find a “Get a free Skype gift” button on your account page. Hurry. You need to click on the button before the offer expires tonight, then, `hey presto', your account will be topped up with the extra credit. It's our little gift to you. We hope you like it.
Don't worry if you're too late to claim your gift. We'll be offering SkypeOut Gift Days throughout February and March, so keep checking back on our blog, where we'll post details as the next one is approaching.
You might also want to take advantage of our PayPal promotion. When you spend a minimum of $10 on Skype services using PayPal, we'll give you an extra 120 SkypeOut minutes and 3 months Skype Voicemail for free.