Q1: For what purposes do FOSS projects use IRC channels? Use an open communication channel
Q2: Why choose IRC over another synchronous collaboration method (like a conference call)? It allows for use of a software tool to automatically summarize the meeting. Technologies for video summaries are progressing but are more prone to errors.
Q3: How can IRC be used to facilitate project management? Project diary, project documentation, task coordination.
Q4: In your own words, explain how to find a channel and join it for whichever IRC client you prefer. Use search functionalities of an IRC network or channel web site