That's something I use a lot for checking IDs and details - where I think someone's said something useful a few weeks/months ago - and want to pull it up quickly and easily. Also for checking plate numbers for previous sightings particularly for serial offenders (eg police Wolseleys) or floaters. And when I'm not at home, so can't check books etc, but can retrieve comments from the site to fill the gap.

So please avoid limiting it if you can ....