SearchFilterHost.exe

Have Vista sp 2, 32 bit with Norton 360. Norton's recent history page shows
SearchFilterHost.exe preparing to access the internet 25 times yesterday.
What is this?

I have looked around on this topic via Google and found that most complaints
about this program (or service), whatever it is, are about it using lots of
cpu's. That's not my problem, but incessant accessing the internet. I
can't find the destination address. One post here from 2007 calls it,
"phoning home to Microsoft". I doubt that's it either. At the time, I was
downloading and editing some new pictures. Somewhere I read that this might
have something to do with .jpeg files.

On sites like bleeping computer and TSF, it sometimes seems like the blind
leading the blind. I trust the MVP's for knowledgeable and on target
answers. Hope you can provide some insight here. Thanks in advance.
KC