This is a secret that apparently hasn't been shared on these boards before...
If you are searching for a home in San Diego, check out Sandicor. It's the service that 99% of all local realtors use. They have to pay for their accounts and have a lot of functions, but you can get some of their functionality for free! It's perfectly legal too - it's a demo version linked to from their home page. You won't get all the details that a paying customer gets, but you get PLENTY of information.
I am not affiliated with Sandicor and do not receive any benefits from your visiting there. I am an internet-savvy home buyer who found this on my own and am doing you all a favor. I am already in escrow so I don't have to worry about competition anymore.
Without further delay, here are the links:
Dynamic Map Mode
Advanced Search, for those who know exactly what they want:
I strongly recommend registering for a free account (top right corner) so you can save properties to your favorites listing.
Enjoy!