Let's say you're a big Tampa Bay area blood bank -- well aware of that 15 percent of all blood donations come from high schoolers -- and eager to transform all that teen enthusiasm for Twilight into fresh faces at your donation drives.

If you're Florida Blood Services, you arrange a promotion centered on the next best thing -- the premiere of the CW's new TV version of Twilight, Vampire Diaries.

Anyone giving blood between now and Sept. 10 at an FBS donor center gets a voucher for two free tickets to to special premiere of Vampire Dairies, held by local CW affiliate WTOG-Ch. 44 and scheduled at 8 p.m. Sept. 10 in the Ritz Theater in Ybor City. You also get a t-shirt, wellness checkup and free cholesterol screening.

Click here for more details.

Based on a series of bestselling young adult novels, the Vampire Dairies series centers on high schooler Elena Gilbert (Nina Dobrev), who finds herself drawn to hunky new student Stefan Salvatore (Paul Wesley) -- a pale, charismatic hottie who seem to have an old soul. Turns out, he's a vampire trying to go cold turkey on the humans, but he's got a big problem: his sadistic older brother Damon, played by Lost alum Ian Somerhalder.

I've only seen the pilot, but it looks like these vamps can walk around in daytime -- how else can Stefan attend high school? -- while turning into mist and black crows.

What kid can resist watching a series starring people like that? If it takes a pint of blood or two to get the first look -- well, people have probably done worse to get Jonas Brothers tickets.

Haven't they?

Click below for a sneak preview: