Google Analytics
From a feedback perspective, it's important that the website is configured to use analytics to know how much traffic the site is getting.
Where are the visitors (new or returning) based geographically; how do they reach the site (directly, via links or via search engines); what keywords are people using to find the site; which pages are of most interest; what impact are marketing / PR campaigns having on site traffic?
A Site by Sumac is configured to use Google Analytics.
Document: Google Analytics sample report - Visitors Overview (10 kb)