It won't affect your SEO.
Some will say that giving the SE bots an ability to use your 'search' will improve it.
But on the contrary, at least from my own experience and experiments, it doesn't really help. Additionally, and others will attest to this, SE bots have the tendency to spam your search feature, which will add greatly to your server/host limitations.

Great site and informative :D

Didn't know this word until now tho -> FOOTOLOGIST

:D

I'm actually fighting my own pronation. Noticed it last year, so far so good. I saved a few bucks coz I noticed it myself and studied my own walking lol...

Bookmarked your blog :D very informative...

I appreciate your time Laibcoms.

Footologist isn't really a word, at least not in the dictionary.

I just needed a single word description for a dot com to
show what the site is about and easily remembered.

I had thought I made it up until I did a Google search on the
uk SE and found many "footologist's" in the uk.

If you liked that one, here is my newest venture - "Diabetologist"
for my next diabetes website. And diabetologist.com was
available - go figure.

Thanks again.