From my understanding, genres are types of work that share commonalities including style and subject matter.
On the other hand discourse communities, as defined by Swales, are "groups that have goals or purposes, and use communication to achieve these goals."

Genres are the chosen form of communication that discourse communities use! (At least I hope my assumption is right otherwise I'm probably going to sound like a total derp)
Going back to blog #2, Devitt stressed the importance of critical genre awareness as a student learning objective. This ties in with our discussion for the week because Swales' actually describes the groups of people who utilize those specific genres - DISCOURSE COMMUNITIES.
For today's blog post task Professor Flewelling asked us to identify a discourse community that we belonged to and analyze it based on the six characteristics that Swales described. The boring science side of me wanted to talk about researchers/scientists as a discourse community but I decided against it because I talk about it way too much. Sorry :/
Instead, I chose to write about a discourse community that we can all relate to - the SDSU student
body.
1. Goals: Get a good education and have fun while doing it!
2. Mechanisms of intercommunication: Classroom interaction, sports events, social gatherings i.e. school club events, greek life, parties
4. Genre: Newsletters, e-mails, school advertisements, textbooks
5. Lexis: Bb, Cuic, Chappy, T-nasty, Aztec anything, EC, the dome
6. Membership: All SDSU students and alumni #AztecforLife