The algorithm measures interest by these activities and pushes your listing higher to the top.Also, go into the Airbnb page Insights, Performance, Views to track your page views. 

Is there a move here, could you try to buy the non performing note?

These people are built to value add deals, you would have to look hard for these people in your market and probably pay them top end pricing to get your properties performing amazingly well!  

I for one built a simple chrome extension to see if the mortgage is less than rent and accordingly provide that information on every zillow listing page.

You haven't provided us with any information that would help us help you.My recommendation: do not sell a property unless you have a plan to invest it in another property that will perform better, or if selling will move you closer to your goals.If you don't have a firm plan, hold onto it until you do.

What is the experience of the group at performing this sort of development?  

It is therefore extremely important for you to know how to properly evaluate and choose a SAFE 1031 Exchange Qualified Intermediary for your 1031 Exchange transaction.You should always perform a careful and thorough due diligence review before making your final selection.

Please have a look.Based on my extensive research:Success Rate: 70-80% for experienced investors; 50-60% for novices.Failure Rate: 20-30% overall, with 10-15% resulting in outright losses.I'm looking forward to your response and the response of any BP members who would like to weigh in.Quote from @Mark Cruse: Never used software.

I'm wondering which company buys performing loans and what hurdles I might face?

Much of my career was focused on REO properties, during which I ran a parallel small business that handled property inspections and performed BPOs for banks.