First there are lots of fake profiles on the site. Many times one can know a fake profile by the fact that it has no face picture that goes along with it.
Second there are scammers such as scammers from Nigeria and Senegal. There are occasions where they have been known to send scam letters to men once one replies back to their expressions of interest. Plus these scammers have been known to chat with men online on the site's online chat system.
Third the site seems linked to the corrupt site 1st-international.com and its copycat sites that are corrupt in their activities and ways because advertisements from these copycat sites appears on the this free dating site.
It is good that it is free because it means if it was a paid site one would waste their money having to sift through all of the fake profiles on the site. However with the issues above it means that it can take some time on the site before one actually meets a real person to communicate with.