Thanks for the link - great article. And yeah, trackbacks... the reason I didn't include it is that the platform we were using at the time (a white-label social network) didn't offer trackback functionality. But yes, I will add it here as #9a - Use trackbacks so you know when people are talking about you!
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http://www.caroline-middlebrook.com/blog/do-you...
On #9, don't forget trackbacks as well.