Here are few articles regarding the thread with following titles and links
1- "Lambert Academic Publishing: A Must to Avoid" - 1st link
2- "Lambert Academic Publishing Continues to Spam" - 2nd link
3- "Lambert Academic Publishing (or How Not to Publish Your Thesis)"- 3rd link.
My own opinion, I think, "LAP Lambert’s real plan is very clear: They make money not by selling arcane tomes to readers, but by selling the books back to their authors after they’ve already signed away the rights."