Biseinen-ya, the group behind Yaoi-Con, is also running a one day, multi-genre show called Winter Shoppingland to be held December 10, 2005 at the Hayward Centennial Hall in Hayward, CA. Admission's only $2.00 and is FREE from 11am until 1pm.
See this thread for more info:
In addition to having a HUGE selection of anime, manga, comics, sci-fi and fantasy merchandise, Winter Shoppingland will also host a cosplay/costume contest, DDR and other fun activities.
Yaoi-Con will also have a booth at WSL with all types of yaoi-licious goodies for sale. ^___^