Forum topics from the Orchard discussion board that we found interesting:
- Running Orchard on two nodes: this is a tricky thing but in this discussion there some good tips
- Community features in Orchard: a lot of built-in and third-party modules bring "social" functionality to Orchard. You won't be able to just install Contrib.Facebook but there are some decent fundamentals.
- A tale of database table locking, transactions and low-level data access in Orchard: sometimes you just have to bury deeper.