This is, implicitly, what we do today to combat toxic information. Caveat lector, in short, is not enough now, and will certainly not be enough for the generation that comes after us, one that by and large has had an even less adequate critical education that we have had. A reader, visiting said page at a later date, wishes to either rate the page visited or see other reader's ratings of that page to help form her judgement about the veracity of the information on the page. The first four kinds of evaluation would be captured via numeric sliding scales, with 0 representing the lowest possible rating in the scale and 10 the highest. Quantitative evaluations are presented in aggregate, as minimum, maximum, average and standard deviation values.
Qualitative evaluations are available, with attributions in the case of each qualitative evaluation.
The latter is clearly a better option for operation and maintenance, but potentially a single point of failure or performance degradation. Otherwise, the data captured by the system can possibly be used for purposes contrary to the best interests of reader and author.