As per William Sanders aka Starwood Lurker on FlyerTalk, Starwood Preferred Guest will be offering triple Starpoints on every stay from September 6 through December 18, 2011. You just have to make sure the stay encompasses a Thursday or Sunday night. The earnings are unlimited so start planning!
The landing page for this promo will be http://spg.com/tripleup. You can check out more details on the promo along with a list of the non-participating properties.
I haven’t used Starpoints very extensively yet but I value them (mostly for hotel nights using the Cash & Points option) at about 2.5 cents per Starpoint. I usually won’t redeem them unless I get at LEAST that much value.
Check back often or follow me on Twitter because I’ll be updating this post with more details as they emerge and even sharing plans on how to really maximize this deal!
UPDATE: If you have stays planned an also participate in the Hyatt Gold Passport program, then you should do some number crunching to see which promotion is more worthwhile for you. Here is a link to Hyatt’s promo in which you earn 3,000 points every 3 nights (link).