I really don't know the etiquette for cross-posting. I see people do it, but I don't see a common theme for when it is appropriate. Wikipedia is not that helpful. It doesn't address the issue of cross-posting on blogs, which is very different than message boards, ie. what to do when you are guestblogging? So I'll just point out a few things I did while at guestblogging at Law.com's Legal Blog Watch and you can go check them out if you'd like:
Katrina and Roberts: connecting the dots
The problem of online contracts
Looting
'Storage Technology Corp.' decision
Critical Thinking
Liability and Blog Comments
The Glass Ceiling
About guestblogging, I really enjoyed doing it, though it is not easy to slip into someone else's skin for a week. LBW is a link-to-others blog as opposed to a write-your-own-thoughts blog while my blogging is mostly the latter. I tried to mix it up by combining elements of both and I hope it worked well for the readers.
This brings me to point two, which is that it was also my first time getting paid to blog. It really made me much more conscious of whether my posts would work for the blog's readership, which is very different than my usual me-centric approach to blogging. Am I interested? Am I getting something out of this? Am I having fun? Am I learning? It's weird because I've written columns and opinion pieces before and got paid and was never so conscious of the distinction. I think it is both because I started blogging with no sense of compensation and because blogging is so personal. There's no editor or entity between me and the save and publish button.
So in this experience I not only learned alot about the blawgosphere I was writing about, but also alot about blogging issues I care about like bloggers and journalists and blogging and autonomy.
Thanks so much Lisa!