Clients who are really salespeople
I took the time to submit a proposal to a posting that was supposedly a client looking for help. When they responded, they said they were really a software company (not a prospective client) looking for people to sell their software. (See the comment thread for the "Inventory Management Software" proposal I submitted.)
This is unacceptable. Is there a way to prevent companies like this from wasting our time when they are not really interested in our services? And is there a way to report the ones who do?