Some positive things are happening in Snap's business that could make its stock a great long-term buy.Snap (SNAP -0.79%) is the parent company of social media platform Snapchat. Its stock has been an underperformer since late 2021, crashing along with much of the tech sector around that time. It's down 47% so far in 2024 as investors appear unhappy with the company's modest revenue growth (relative to its peers) and its ongoing losses.The company's business has had an added issue to manage since 2021 thanks ...