lol, i think so too.. i called up Airbnb support to clarify and they also said that they don't do any such things.. however the searches sometimes do have a complex algorithm running behind ...however just merely clicking the listing link  and not ending up booking couldn't possibly set me up for failure...

There was recently a thread about Google's new search algorithm.

I've seen mortgage inquires have zero affect on borrowers.Shawn hit the nail on the head mortgage inquires during a specific time frame will only count once although they will show each time.Here is a link to thread where I just addressed this.https://www.biggerpockets.com/forums/311/topics/310884-credit-run-buy-unknown-sources-multiple-times For more info I'd suggest checking out myfico.com  This post is 100% correct, especially the part about FICO treating their exact algorithms as a trade secret.Very expensive "FICO simulator" software that we use internally that lets us throw "what if?"

The other model I planned in using is to treat some data similar to an algorithm, the use of Newton's method of approximations of differences.

They too are still constantly changing the algorithm, so just offer good, unique content that will help the end user and you will find that your pages should do ok.

@Jacob Forbis - While nobody knows their algorithm - this kind of explains it http://en.wikipedia.org/wiki/PageRank

What softwares do investors use for administrative tasks or other algorithms used to help your work flow?

Those algorithmic valuations cannot detect many variables that make all the difference in the accuracy of a valuation.

It's a computer algorithm, so it can't always pull perfect comps, but in most areas, it does a pretty decent job.

My best guess is high frequency traders (a.k.a. computers) making algorithmic trades based on current positions, not the fundamentals of the companies or the economy.