I am likely to miss the 2008 AIAA/USU Conference on Small Satellites, which is a shame, because there's no space conference I've ever attended with such a "family" feel and so much expertise available on one subject. The theme this year is "Small Satellites - Big Business." Early registration is open until 8 July. Don't miss out if this is your area of interest. I hope to be back next year.
I should mention you can still register for the other conference with a focus on microspacecraft, the 6th Responsive Space Conference, to be held the end of April in Los Angeles. Go to www.responsivespace.com.