Briefs: Upfront, Comstock, Eisner, Fox Biz, SXSW

-   Stronger upfront ad sales expected for the networks (WSJ sub. req.)
-   NBCU digital chief Beth Comstock moves back to GE as senior VP
-   Michael Eisner debuts his second web show, “The All-For-Nots”
-   So, what’s missing from this Fox Business billboard ad in NYC?
-   Last.fm mashes your listening profile with SXSW schedule