Last week I attended this year's meeting of the Informal Advisory Committee of the Biosafety Clearing House (BCH).
The Cartagena Protocol on Biosafety regulates the international trade with living GMOs, and one of it's key components is its clearing house. The BCH collects all the data countries have about GMOs from data about the individual GMOs, its transgenic constructs and risk assessments to national laws and decisions taken about import and cultivation. Given such diverse information, and the need to cross-reference a lot between records, the site still manages to look quite calm and accessible.
But what really made my day was the advanced search. Users can add additional type of records using "and", "or" and "not" and the queries constructed that way, are displayed graphically so that you can see easily how the different criteria relate to each other.