It's not likely dangerous - while Great stuff is flammable - the hot air in your duct line will not ignite it.What may happen is the foam will eventually loosen over time with the repeated expansion and contraction of the vent pipe and the seal will fail.  

For those of you who frequently 'rent' out your homes or property, have you ever looked at pricing algorithms similar to https://beyondpricing.com/ The feature sets truly look promising. 

On the other side of the equation, as more homeowners know the brand and sign up with them, more guests know them and want to stay at one of their homes for a vetted, branded, and consistent experience.The managers are also landing more repeat customers that move across markets, as well as referrals in new markets.

I do have a couple who call me frequently to say "Let's offer $100k on 123 I'm Dreaming Ln.," but I would go crazy if I had more than two who did this.  

Or, more frequently than not, they would want to "upsell" me to things that were easily $500k above my cap, also known as total time wasters.I knew that I could do it better, and really focus on servicing a select number of clients, and specifically, other investors.There are a _LOT_ of 'hidden' costs associated with being an Agent and other not-so-obvious requirements.I'll be more specific than everyone else here so you can really make that decision for yourself. 

We managed to get by and held on to properties and watched them return through the 2011-2016 run up.To very worried noobs: if you're afraid of a big crash just dissolve the assets and then repeat... that's what the big successful investors do.  

Those that don't learn from history are doomed to repeat it.

I don't quite understand your request.My local Wholesalers (these are the websites I use frequently) in my area would not benefit you any unless you are looking to buy in the Central Florida Area.The best resources for deals would be:MLS (depending on Area you want to buy)Agents (Realtors) (depending on Area you want to buy)Brokers (depending on Area you want to buy)Wholesalers (depending on Area you want to buy)Local REI Meetings (depending on Area you want to buy)Friends & Family (depending on Area you want to buy)Bigger Pockets (depending on Area you want to buy)

And Kent, a city about 20 - 30 minutes from Seattle is frequently in the top 10 fastest growing cities in the entire country.  

Even if I taught everyone my system very few people would be able to repeat it.