I'm happy to formally announce that I am now working at Valve full-time. I have been here since mid-February, when I relocated from Atlanta after leaving my job as a patent attorney by day and BSP developer by night. Valve originally hired me to work on development tools and on Half-Life's mulitplayer code, and that's taking up the bulk of my time. However, now that Ben Morris has decided to return to Canada, I will probably also work on finishing up Worldcraft 2.0.
Needless to say, these commitments are going to make further development of BSP (by me, anyway) very difficult. I am considering the possibility of releasing it to another developer to work on. However, the priority here--obviously--is to make Worldcraft the best and most popular 3D editor available and I'll do whatever I can to help make that happen, including adding various popular BSP features to Worldcraft as the need arises.
Games development has been a long-time passion of mine and I am going to make the best of this opportunity to pursue that passion full-time. I consider BSP to have been somewhat of a stepping-stone for me and I am happy to be moving on to other interesting projects. Valve has made both my fiancee, Beth (who is also an attorney) and me feel very welcome and we are both excited about our future living here in Seattle.