There are two ways I suppose we could do this:
1. Send a letter/email in & hope is gets posted in the fan mail section.
2. Contact the seperate advertising address given by the magazine.
For the first idea, here is the little article they give you in reguards for fan mail (or as they put it, REBEL RUBLINGS):
Write to: REBEL RUBLINGS,3245146 Place SE, Suite 110, Bellevue, WA 98007, or email email@example.com. or email firstname.lastname@example.org. Letters may be edited for clairity and space considerations. All mail MUST include your FULL NAME and HOME CITY. Star Wars Insider is not responsible for any unsolicited material received. All material sent to "Rebel Rumblings" becomes the property of Lucasfilm, LTD. Due to time contraints and the volume of letters received, individual responses are not possible.
For the second idea, here is the whole little article given by the mag.:
ADVERTISING: Contact Star Wars Insider's Ad Traffic Manager, Wailam Paizo, at email@example.com or call (425) 289-1340. All ads are subject to approval by Paizo Publishing LLC and Lucasfilm, who have the right to reject any ad for any reason. Advertisers and/or agencies of advertisers agree not to hold Paizo Publishing LLC liable for any loss or expense from alleged wrongdoing that may arise out of the publication of such advertisements.
Petition signer # 34,865