From random search:

Because our Dive T-shirt RunnerUp was pretty popular post, we're doing the similar post. This time, it's all about Win Free Dive Trip (or Dives). The title of the post is linked to the website. Do let us know if you know any other offers available to divers.

• Win a Free Dive in Solitary Islands Marine Park with Jetty Dives- Photo Contest
  Jetty Dives in Australia is running Monthly Dive Photo Contest. The only catch is the photo needs to be a work during their dive boat trip.
• Win a Dive Trip for 2 to Fiji by Dive Zeo and Matava
  Although it is a link to the post on ScubaBoard.com, Dive Zero is offering a Top Point Leader contest. The one that has the most point will win a dive trip for 2 to Fiji!
  Don't forget to check out: http://www.divezero.com
• Northwoods Trash & Treasure Dive
  YMCA of Northwoods and Mobile Divers LLC are hosting Northwoods Trash and Treasure Dive on Sept. 19, 2009 in Lake Metonga, WI. Some of the best prizes include a 6 nights 7 days trip to St. Croix, USVI to Apex Regulators to Suunto Dive Computer to Aqua Lung Sling Shot Fins. 
• Win a Free Dive Trip with Jeanne-II
  Jeanne-II, run by Capt. Bill who is also the president of Eastern Dive Boat Association is offering a Free Dive Trip giveaway when you fill their Registration Form! (Don't worry, they don't spam you.) Scroll down to the bottom for more info.
• Win Free Blackbeard Trip & more
  Offered by the Great American Diving Comany in conjunction with their Back-to-School sale, you have a chance to win a trip with Blackbeard!
• Red Sea Safari Underwater Photo Contest
  If you enter their monthly underwater photo contest and are selected as the photo of the month, you'll be automatically entered in their big prize draw - Free Stay, Transfer and 5 days of Unlimited Diving.
• Discover Dominica Photo Contest - a paid trip to Dominica!
  US Residents only - submit your photo exploring mother nature and win a trip to Dominica for 2!
• Win a Free Trip to Bay Island Beach Resort in Roatan by Texas Clipper
  Submit your photo of incredible marine life, divers, and the graunder of the Texas Clipper beneath the water. Contest detail is on the right side of the page. 

We hope that this can keep you busy for a little while! Good Luck and have a great weekend!