Stirling Newberry stirling.newberry@xigenics.net writes:
The information content of a work is not merely the lexical content, this is why lexical search engines have given way to google which includes who cites who. Wikicite will provide a means for generating scholarly apparatus to determine the linkages between works, their content and the communities annotation on those works. Human knowledge isn't an undifferentiated bucket of bits.
Of course, it is allowed to store bibliographical data (even annotations etc.). Try idzebra (indexdata.dk) , it even comes with a PHP interface.