Wow .. I must be quite the dullard here, in that my start page is "my page" .. not someone elses ..
But I digress .. For the past two years I've been promoting site search functions for our clients ..
This isn't a new concept by any stretch .. it's been around for a while now, and the way we are doing it here is seeming to catch on with regard to increased traffic.
Site search is what it is .. the hook, or trick, (if you want to call it that) that I've found here, involves a client, selling widgets, putting on a search function that allows it's visitorship to search for all of the other guys out there that sell widgets too. Google is so very intrusive and nosey that it can't ever seem to quench it's neverending thirst for poking around into the DB's of others .. It loves these DB's so much in fact, that it shows in the SERP's.
Want to find widget site #2 in the Google? .. You'll find it in the link placed in 3rd position that Google listed from widget site #1's search function -- this is how it's been working out.
It's sort of a quasi exclusive search function, if you will, and because it's *niche, all of the traffic coming in from the big G with people looking for widgets usually hits the client site first (as a result of his/her owned niche site search abilities)
The site, in many cases, as a result of this, gains a certain new level of authority seemingly because of it's ability to produce a decent resource for those looking for the widgets that Google somehow has lost on the back 950 ...
Just my 2 cents