I have a domain with them, and suddenly stopped receiving any email for a few days. So I contacted them to findout what was going on, they said it appeared I was using the domaing for sending SPAM and they have launched an investigation to evaluate the content of the emails sent. I was confused so I looked into it and saw that the SMTP mail forwarding was open on my server and a spammer started using the account. GODADDY by default sets this as PUBLIC. So I contacted them to tell them what was going on and they told me my account might be suspended if I violated TOS. I explained I send around 3 emails a month on my account, and what had happened, but they just kept responding that it is being investigated. At the time I didn't know what was going on, but now I get it.
I will be forwarding all my domains registered with back to Network Solutions, I am not a fan of sleezeball operations and extortion.