One of my interests, aside from Lotus Domino Administration is security.
I've been thinking about preparing a few submissions to present at various Lotus conferences on exactly that. Lotus Domino and Security. All on the Administration side.
Things like forensic investigations, securely configuring your servers, etc.
But, I'm not willing to do all the work if people aren't really interested in attending. (I'm selfish that way.)
Let me know in the comments if this is something that would interest you.