Pros
There cannot be a single good thing that I can think of, mainly because all that they do would not teach a single thing, serve no purpose, and are pure hideous.
Cons
From the title of the internship till the work one does, everything is a sham. There is absolutely no work which makes any sort of sense. There is a list of highly useless tasks which serve no purpose, and are a complete waste of time and effort. At the drop of the hat, they wish to do fundraising and leave no opportunity to ask money. The best thing is when you ask them what do they do for fundraising, they remain as clueless as any outsider. I feel bad for all those just out of college folks (including me), who try to build a career on this note. My advice: Please do not waste your time here.