Never Straight But Gaily... Down the Charts? comes across as a socially-liberal company — a community, even. So what to make of this: Inc. is facing criticism from authors of books with gay themes who say the e-commerce site deleted the sales rankings of their titles.

By midday Monday, the rankings of many books that had been missing in recent days, including titles by E. M. Forster and Gore Vidal, began to be restored.

Amazon didn’t immediately respond to requests for comment. The Associated Press on Sunday quoted a company spokeswoman blaming the problem on a technical “glitch” that it was fixing. But at least one author says Amazon told him the problem stemmed from a reclassification of the books as adult.

Weird. You have any theories? Because I’m stumped.