Now that Hilton HHonors has decided not to have a chain wide point promotions this month, they have Miles & More/Emirates/Virgin Atlantic/Delta SkyMiles associated ones, you can still participate to their daily giveaways at http://hilton.promo.eprize.com/25days/.
The prizes are actually very good, but the likelihood of winning is, of course, rather low. If you have time to spend, you can visit the site daily and plug in your email address. This promotions is valid for residents of United States, Puerto Rico, and the United Kingdom.
Although Hilton HHonors doesn’t have “official” point promotion going on this month, you can take advantage of the Virgin Atlantic related promotion that could earn you 40K Hilton HHonors bonus points.