The New York Times offers some blogging etiquettes and other words of wisdom for bloggers:

1.That’s what all the name-brand bloggers do. It’s not bad form to send a short note to a prominent blogger drawing his or her attention to a really good blog you wrote.

2. Linking to other bloggers is the best way to get them to link to you. Links from other bloggers increase your readership two ways: they send readers directly from other sites, and they raise your ranking in search engine results. A

3. There’s an unwritten rule — actually, it’s written about a lot on blogs — that you should always link back to bloggers whose ideas you repeat, or from whom you get a cool link to another site. Don’t use other bloggers’ photos or excerpt their writing without a prominent link back to the original. When in doubt, give credit. Link.