i think this was more or less covered, but i'll toss another stick in the fire. unless you're willing to take the chance of having something
following you around i wouldn't do it. i have no set-in-stone beliefs on such things but i generally accept that there are things out there that we
don't understand. call it angels/demons, good/bad energy aliens, ghosts, whatever. you could get any mix of the above if you invite such things.
i've heard some people say that spirits can't harm you in any way from where they are. i've also heard things that link evil spirits/demons to
grays and that they will do their best sometimes to trick you into giving them permission to come into your life. i personally don't readily accept
that one but i keep an open mind.
i think a lot of the bad stuff that happens to people that is normally attributed to curses or demons is actually just a product of their own
concentration. if you think hard enough about something it's possible that may manifest in reality - good or bad.
bottom line is just be absolutely sure you know what you're getting into and how to get out of it. if you can't feel 100% comfortable that then i
don't think it's worth trying. if you do try something, the only advice i can give that seems sensible is to maintain a sense of authority and
control over the situation. i would also start with something benevolent - at least if you F up you might not have such bad consequences. and yes,
film it. forget batteries - keep on in the camera as a backup, but go for AC as your primary. as someone else said, sometimes they will draw energy
from wherever they can get it. i'd hate to have you on the brink of getting incredible evidence only to have your 2 hour battery charge depleted in
30 seconds.