A running meme is that bioinformatics data is more open than bioinformatics (e.g. mentioned in this blog). It is my feeling too that this is the case, but looking at this spreadsheet with NAR-listed databases (resulting from this BioStar question), already shows many instances where the data cannot be downloaded. Moreover, the sheets give no clue on whether I can modify and redistribute the data, two core rights for Open Data. I, therefore, added two columns to allow annotation with these two aspects. Any non-commercial clause would make it non-open data too. General info can be found at Is It Open Data?
So, my question is basically how Open is bioinformatics data? What is the percentage of data that is in fact Open?