The Digital Communications team at Weber Shandwick posted extensive daily coverage of SXSWi. The compiled coverage is at:

Day 1 & 2: http://www.socialstudiesblog.com/2010_03_07_archive.html
Day 3: http://www.socialstudiesblog.com/2010_03_14_archive.html
Day 4: http://www.socialstudiesblog.com/2010_03_21_archive.html
Day 5: http://www.socialstudiesblog.com/2010_03_28_archive.html