How many of you have been noodling around with Google’s new Instant Search functionality since its unveiling earlier this month? I’ve spent the better part of a week working with it, trying hard to keep a “completely open mind” as to its benefits.

I’ve finally came to the conclusion that … I can’t stand it. I’m a pretty fast typist, and generally know what I’m searching for. I really don’t need Google “pre-anticipating” search results for me, and find the constantly jumping search results window extremely off-putting to the point of distraction.

I gave Instant Search a full week … and couldn’t take it anymore. I’ve now elected to turn it off completely.

Wondering if I was the only one with this view … it certainly didn’t take long to find out that there are a great many people out there who feel the same way. You can use Google search (either the “instant” or “traditional” will do fine) to find any number of blog posts and user comments about Google Instant Search that are just one notch shy of mutinous — and hardly genteel in their choice of language. (A few examples can be found here and here and here.)

If the comments by disgruntled users are to be believed, Bing/MSN may find itself with a nice little bump in search volume market share by the end of September.

And if that actually happens, Google Instant might die a quiet death – which wouldn’t be the first time Google laid an egg in its “throw-everything-against-the-wall-and-see-what-sticks” approach to product development.

But if Google Instant does gain traction … there are some negative implications for search marketers as well. Many companies seek to structure their online marketing campaigns by determining the optimal amount of spending on search advertising, display ads and social media. The key to success in this endeavor is undertaking a process that examines the millions of cookies and billions of clicks that are made by web users, along with factoring in other elements like geographic location and time of day.

All of this information is weighed against the cost of various ads and the likelihood of success as they are served to the user. That’s determined by running regular models of millions of keywords and word combinations, judging the relative costs to determine the optimum frequency. For some of the most aggressive marketers, these models are run once or twice daily.

The advent of Google’s Instant Search scrambles all of that, because it makes the process even faster and more hectic than before. As those of you who have experimented with Instant Search know, you start seeing “suggested” search results with just the first one or two keystrokes … and those choices continue to change with each new keystroke made or movement of the cursor down the list of Google’s suggestions. For marketers, the result is a lot more velocity on the ad side – and more price changes.

As proof of this, within the first few days of Instant Search’s launch, sites that Instant Search recommends after the first one or two letters are typed into the search box – “Mapquest,” “Ticketmaster” and “Pandora” are three useful examples – were experiencing significant increases in traffic, whereas their hapless competitors were not.

If that’s what is happening with the big boys, where does this put smaller businesses? The answer is obvious: They’re going to get squeezed big-time … and as a result, their search advertising costs are going nowhere but up.

Mighty sporting of you, Google.