A place where people who face problem needing commercial solution, makers who are solving/want to solve such problems can participate in constructive discussions to make products which people want.
Problems are the first class citizen at needgap[1] as problems are something which exists now unlike an startup idea which becomes real only when executed and a startup could be made out of it.
If you're interested in why I had to create it, I've detailed it in 'Startup ideas vs Problems'[2].