That doesn't make any sense. I've posted the rules for a save situation, and none of those boxscores fulfilled the criteria. Plus I found this through Wikpedia...
A blown save (abbreviated BS) is charged to a pitcher who enters a game in a situation which permits him to earn a save (a 'save situation'), but who instead allows the tying run (and perhaps the go-ahead run) to score.
In none of those boxscores was a pitcher brought in in a save situation (see the above rule). Some were in the sixth inning. I wonder if, because it's not an 'officially recognized stat' that it is open to the interpretation of the offical scorer? In which case I suggest that they are wrong.