Best resources for finding an apartment in Castro District, San Francisco?

Rentals are handled differently here in San Francisco than over on the east coast....where real estate agents are the primary source and actively involved in the housing search for a fee. Here, for moderate and mid range (and even some high end properties), Craigslist is probably the most up-to-date, searchable and hassle free resource if you are doing the work yourself and have the time for calls and making appointments. If time and effort are an issue, Vanguard Properties has a full service rental department for busier professionals: our agents can help by matching you to available inventory, filtering out properties that aren't right based on their extensive local knowledge, and will do much of the paperwork and schedule showing tours for you....