It's on the Travel Channel on Friday nights. It does have a "creep factor" because of the music and voiceover tones they use. It is entertaining, to say the least. I'm not a big fan of watching too much of it in the dark on a Friday night.
Similarly, "Most Haunted" from England is entertaining. They usually have a guest medium that will sometimes "channel" ghosts. Much of it, though, seems to be close ups of the cast in night vision -- very "Blair Witch." They do use ouija boards and other occult-type devices, so that is different from "Ghost Adventures." Not a big "creep factor," so I have watched it in the dark.
"Ghost Hunters" on Sci-Fi is, I have to say, the most "believable" of the three. The reason I say that is that they seem to try to debunk and prove the absence of ghosts. Whether it is real or not, that at least gives it the air of believability, plus the fact that you've got 2 guys with a "regular" job, that of Roto-Rooter guys. It's funny to me how accepting their Roto-Rooter bosses seem to be of their going all over the country to chase ghosts. No "creep factor" here. The "Ghost Hunters International" is just more Ghost Hunters, only in other countries. I do like the guy with the Irish accent, though.
Yes, I admit a guilty curiosity about these shows. I know its entertainment coupled with the "what if" of ghosts, same as with UFO's, monsters, and the Bermuda Triangle. Still, I know what's what, and I know that it's just entertainment. I know to not dwell on the "what if" because that would allow a stronghold to form.
"Oir is leatsa an rioghachd, agus an cumhachd, agus a gloir, gu siorraidh, Amen." ("For Thine is the kingdom, and the power, and the glory, forever, Amen" -- Scots Gaelic)