This is one of the fairly well-known services for freelancers. It's not practical to work exclusively on it, as there are very few tasks available and the pay is very low. Personally, I only use it during quiet times on my main platforms. The tasks are simple; to complete them, you just need a social media account and to read the technical assignment carefully. No mental effort is required here: it's either standard activity on social media, like likes and reposts, or browsing websites, voting in ratings, and similar tasks. You definitely won't earn decent money here, but with minimal effort and time, you can cover your internet and phone bills, and also have a little left for pocket expenses. For example, I earn about 2-3 thousand rubles a month, which isn't much, but I spend only an hour or an hour and a half of my free time a day, maybe even less. At this point, I do everything on autopilot. You can withdraw money starting from 100 rubles, all through WebMoney.
