I could talk for weeks on end about this kind of videos and organizations, but I really don't want to spend the next few months talking politics and difference of opinion, so I will keep it short and probably not respond further.
1. I believe it is important to bring situations such as this to light, even if I don't agree with most of what Invisible Children do and stand for, and how they go about running their organization and furthering their cause. This video is not the devil, but it's also not a bright light shone into darkness by the saviours of the world.
2. I believe it is important, while this film is very captivating and informative, to research the situation on your own, not blindly join a cause based on a picture painted by one group of people.
3. I believe the critics against Invisible Children are mis-representing the information that is partially true but they try to spread to make IC look bad.
In general, what I always like to tell people when "Told about horrible truths.", use your own brain, don't swallow what people say hook,bait and sinker, if you feel this is important and want to get involved, study the subject, find the best way to help / donate / whatever you want to do when getting involved. Don't just jump at the first impression and join a cause for the sake of it.
TL;DR: Use your brain and think for yourself what to do and with whom to do it.
Regards,
Richard