About the only thing that @MichaelS has right is the bolded above.

From our website:Vacant Rental MarketingWe publish rental properties on 20+ websites, track all inquiries, showings and applications, so we can provide you with feedback via bi-weekly Property Marketing Reports.Here’s some of what our Marketing Department does:Marketing Pics are edited, so your property looks its best:Pics have our Watermark, to avoid crooks copying them and creating fake ads that may result in our ad being dropped from a website.Advertising is published on 20+ websites :We no longer use “For Rent” signs, they statistically attract lower quality prospects and increase the likelihood your property will have a break-in and theft.We track Web Views and Inquiries, analyzing the numbers to identify problems and trends.Showings are exclusively scheduled via our online scheduling software:Prospects can self-schedule at their convenience, 24/7/365, which increases showings.Prospects receive multiple automated communications after a showing, encouraging them to apply and give feedback.We track Scheduled Showings versus Completed Showings to identify potential problems.Our bi-weekly Property Marketing Reports show you Period & Total amounts for the following:Web ViewsInquiriesShowings ScheduledCompleted ShowingsApplicationsWe analyze this data to provide you feedback about what the numbers mean we should do to get your property rented faster.

That’s a statistically high risk profile for shenanigans.

Avoid bold colors and political or religious decorations that could offend someone.

Though I have no statistics on this, I think the second group did better.Thanks for raising this issue and I wish you the very best.

That would be a pretty bold move by the sellers (cutting the freon, electrcial, loading it up)  but anything is possible. 

Thanks.Redfin releases some good forecast..Zillow/Apartments.com / Rent.com might have an opportunity to produce and publish Rental-statistics and forecasts, that would certainly benefit RE-enthusiasts. :)

(All figures in bold blue are input cells).

Statistically, most mortgages are turnover every 5-9 years. 

The safety of using doing Lockbox Showings will depend on:1) Class of property - the higher they class of property, the higher the class of prospects and the less problems you will have2) All of the above is based on statistics - there may always be an "idiot" that innocently leaves the door unlocked.