We are considering using Google Site Search as an 'internal' search engine for a web site which has consistently achieved excellent rankings for target keyphrases in Google organic results.
We tend to manage content on the web site purely for SEM purposes which is bespoke and unique, and is largely different to the more general content we would want to include in the internal search using Site Search.
I know that we can exclude certain directories from Site Search, but I am wondering if using the Google product in conjunction with a site which is achieving excellent organic ranking would have any deterimental effect on organic rankings?
I am sure I am being paranoid, but I don't want to put at risk (even by accident) the organic results.
I second that. If you modify the HTML of your pages then, of course, there's the potential for some impact (almost certainly slight, depending on how you go about it). Google site search is retrieving content from the Google index - that is built elsewhere. It's just a fancy interface to site: searches basically.
I also agree that site search should not affect your organic rankings.
The only negative effect I might foresee would be if you linked to Google serps pages in an attempt to get those serps pages indexed. That's something Google doesn't like. Otherwise, there should be no problems.
Site Search will 'index' and return results purely from your local site (or certain directories if you specify this), but these pages will still be held in the 'worldwide' Google database? Is the algo used to return Site Search pages to local SERPS the same as the global Google algo - therefore to get the best quality results you should optimise these pages as you would for overt Google organic marketing?
If you are asking for a whole load of pages to be spidered specifically via Site Search and they are contained in a 'generic' database which provides all SERPS regardless of the location to which they are published (local or wordwide organic), would this not have an effect on a sites' organic positions overall?
Or, are Site Search pages somehow 'ringfenced' for publishing to your local SERPS only?