I stumbled upon BP several months ago as I was doing some finance related reading/internet searching, but only recently joined the team.  

Contrary to popular investor beliefs on the internet, nothing really ties up title other than a restrictive covenant to title or joint tenancy ownership exists where both or all owners must agree to pass all interests in title, subject to state laws.

I think any niche forum on the internet develops a "hive mind" of sorts.

I would also scour the internet at large, be careful of any sites that are pushing VA loan products.

I don't recall where I saw this just 3-4 days ago, on a program or possible internet video the first thing they said was: you make your money when you buy.

Make offers on "for sale by owners", on expired listings, get sellers to call you, advertise using print, radio and Internet.

Once that initial list is posted, I do a quick internet search on the homes (Most of the time I use county records and zillow/trulia simply because they are  at the top of the search).

You can knock on foreclosure doors, call Craigslist ads, search the internet, call realtors, get in the paper, send direct mail pieces to probate and out of state owners, etc. 

The sensor runs to a unit that I can control on the internet.  

Brian,If you are asking about internet based auctions then it would seem you would have alot more competition and I would only invest in high end properties and not invest more than the land is worth since you aren't physically looking at the properties to limit your risk.The better option is travel to a nearby state that is conducive for tax lien investing and do finish your due diligence by driving by the properties you are interested in.If you aren't careful you could invest potentially invest 15k or so in a property that looked good then it turns out to be worthless.If you had a family member or very close friend you could trust in a good tax lien investing state then you could get them to drive by the properties and you do the internet based research remotely.