‘According to Psychology Today, as many three-quarters of bereaved people report some kind of after-death communication with loved ones. This could come in the form of a dream, a feeling, a favorite song on the radio, just about anything, really. I’m going to discount the most likely and most boring explanation for this—the emotional upheaval of losing a loved one makes us imagine things to give ourselves comfort—and assume that it’s at least possible to communicate with the afterlife.
If it is possible to speak to the dead, how you do it can be hazy; this is the spiritual world we’re talking about after all. But each of these methods has its believers—and I’ve rated each one on an entirely arbitrary scale of usefulness, too….’
— via Lifehacker