Is Bird Dogging a Waste of Time?

[Chas Fabiano]

I can understand if you are doing some everyday driving and spot a vacant property or a property in disrepair, but wouldn't a person's time be used wisely online?

Does listsource or listability have ways to search for vacant homes?  If so, driving by the address to inspect the property makes sense.  

After the "drive-by"(no guns please), pull up the property information on the tax assessor's website. 

Does this make sense?  Is it more efficient?