Can't someone build a portfolio by doing demo trading and/or just by adding trades they are not trading themselves but giving a tip to others to trade (of course with a warning sign that this trade was not executed by the trader himself)? Can't that still be a way to build a portfolio if someone does not have enough capital to trade with?
Yes, good point. You can build a portfolio with Manual trades, but other users can filter on what is verified or manually added trades.
The toplists are based on verified trades only to be totally genuine.