If you have ever bet on sports, you likely found sites which give tips on what you should bet. It's similar to the social trading in the world of trading.
Social trading is a trading strategy when you copy someone else's trades. It's suitable for people who don't want to invest too much time to find a good trading opportunity. You just have to search among other traders who share their strategy, trading ideas and historical performance. After you find the most suitable trader for your needs you can replicate its activity by one click.
On the flip side, you need to be careful when selecting the trader to be followed. Check her historical performance and also the risk level she is taking to realize that historical performance.
Several brokers launched this kind of service, the most famous among them is eToro.