Sites like Trulia/Zillow for buy and hold properties

[Joe Smith]

Can you realistically expect to find properties on sites like Trulia or Zillow that are a good starting point for making offers?

Obviously, properties aren't going to be *listed* for a price that approaches the 50% rule, but are these sites suitable for identifying properties you might be able to make offers on that may cash flow at the conclusion of a deal?

I'm looking for a few properties to buy and hold, while incorporating the 2% and 50% rules so often referenced on this forum. I'm not looking to start a marketing campaign or mass mailings, nor do I expect to trade my career for REI. Given this info - where should I look?