New Discount Offer For The Linux Command Line

I recently got a notice from Lulu stating that, for a limited time, you may receive a 10% discount when you order a printed copy of The Linux Command Line.  Details from the notice are as follows:

Disclaimer: Use coupon code SUMMERREAD305 at checkout and receive 10% off The Linux Command Line. Maximum savings with this promotion is $10. You can only use the code once per account, and you can't use this coupon in combination with other coupon codes.  This great offer ends on June 30, 2010 at 11:59 PM so try not to procrastinate! While very unlikely we do reserve the right to change or revoke this offer at anytime, and of course we cannot offer this coupon where it is against the law to do so.