I've just had a look at AV results, and it seems that whenever a site has a LookSmart listing AV replaced its meta-tag title and description with those given by LookSmart - and the search results changed accordingly... :(
I do hope this is temporary and that they reconsider this - given LookSmart's track record of butchering titles and descriptions, they are actually penalizing many of the sites listed in LookSmart.
If this persists, I am NOT going to submit any sites to LookSmart, since for all of my sites traffic from AV outweighs by far any of the traffic gained by being listed in LookSmart...