@SmokeDetector Custom flagged: This may look like an off-topic question, but it's really spam. It's part of a campaign of
spam for learnshareit.com, posted on multiple SE sites using multiple accounts/usernames over the last couple of weeks. The spam has varied from straight spam, to plagiarized + spam link, to apparently valid questions or answers with a spam link, which are commonly cross-posted on multiple sites and/or off-topic with the appearance of being on the wrong site.