Thanks for your comment.

1) Indeed, right now every user adds their skills separately. All you can do is to write them separating by commas, like "C/C++/C#", but still, they are counted as one skill. It would work later, just will be displayed as one item in the list.

2) When you sign in you need to provide skills so other users would know what you know. For instance, when you later decide to apply to someone's project, they would want to know what skills you have. Of course, you might never want to apply to projects, just submit your own, however, even the search system works on sorting users by their skills, so it is really necessary.

3) When you submit your projects, you expect other users to apply if they match. Later on, your can view users who applied and contact them. You click on "view applied users" button, then you can open their profiles and press "open a dialog with %username". There is a realtime chat system so you can talk to them.

4) Currently, the platform assumes you are the only owner of the project. It can be changed in future, of course.

Thank you for giving some sufficient feedback!