This might have been posted already... (or old news)... but here is part of a reply to a recent email.
"We only have the free shipping promotion periodically throughout the year. The 5% discount is available year round."
"Our current discount is $10.00 off $50.00 or more with discount code April10. We will be running the same promotion in May with discount code MAY10."
"We have a monthly newsletter which includes the discount codes for that month. When we have free shipping promotions that will be found in the newsletter and in the Hammock Forums. If you would like to receive our monthly newsletter you can sign up here: http://bit.ly/S3aRod