Someone who goes to a funeral or viewing when they didn't even know the person; Someone who barely knew the person then acts like they were their best friends once they die. A fake person trying to act important to gain attention; A Poser.
Bill: Man what's Caitlin doing here? She's bawling like she was her best friend since birth.
Bob: Oh, well she had a math class with her back in pre-school.
Bill: Ahh, she's a Site Seer.