The Down/Up Side Of Wiki
In the article on the health effects of sun exposure you can find the following sentence at the bottom of the first paragraph:
There is a general consensus that sunburn should always be avoided.
Followed by this sentence:
There is a general consensus that the previous sentence was written by Captain Obvious.
Crowd-sourcing has ups and downs, sometimes both at the same time. There is a general consensus that this is hilarious.