I will add that I personally would reccommend the bay area in northern california over LA for tech people who are ready to go and move somewhre. There are tons of tech jobs in San Francisco, Palo Alto, San Jose, etc. etc. and some really gorgeous places to live. I know some people who live in the beautiful Santa Cruz mountains and commute to silicon valley and are very happy. They live in a paradise environment, work in a cubicle and party wherever (Oakland, SF, Santa Cruz) and weekends up to napa (if you are into that sort of thing) are nice too.
However if you like the city life and want to be in LA, get off on traffic, dont mind fast pased coked out stress-cases who only care about money and fake boobs and like to go to exclusive clubs where you will party with movie stars then go for it. I have lots of friends there that love that kind of life. I dont mean to be offensive. I just personally like Northern California better and there are plenty of tech jobs up here. I know that the cost of living is high but I belive that it is worth it and if you are going to be doing tech stuff you will probably be getting compensated copiously.