I don't know if it can be useful for you. There is also another library, which is called the Blah Blah Library, freely available at
The text of the answer is a detailed description of a project on sourceforge. The first name of the contact for that project is the SO username of this poster. Poster's profile page points to this project as website.
The posts are not really off-topic, I will grant you that, but the motivation of the poster is clear.
I flagged this situation as Other, describing it as spam/astroturf:
This user has two answers; they're both to old questions, and the text of the two answers are identical. The post recommend a product which is marginlly --but not exactly -- on topic. I say both answers are spam.
The flag was declined. Personally, I think this is incorrect, but I'd love to hear some other opinions. Is this kind of mining for excuses to post advertisements tolerated?