Here are some stats on different IF sites:
https://www.alexa.com/siteinfo/textadventures.co.uk
Global rank 94K, 40% of traffic from US, 11% from UK. Common keywords: zork, text adventure. Linked to from google, furaffinity, deviantart, and youtube.
https://www.alexa.com/siteinfo/intfiction.org
Global rank 617K, 62.8% from UK, 17.1% from US, 7% from India. Common keywords: interactive fiction forum, coc2 save editor, windows glulxe. Linked to from google.
https://www.alexa.com/siteinfo/tads.org
Global rank 246K, 42% US, 24% UK. Common keywords: tads, interactive fiction, ifdb, best twine games
choiceofgames:
https://www.alexa.com/siteinfo/choiceofgames.com
Global rank 88K. 44% US, 10% Irish, 8%UK, 5% France.
Common keywords: choice of games, choice games, invisible character, seraphinite game. Linked from google, youtube, google.ru. google.com.ph, dashingdon.com
https://www.alexa.com/siteinfo/ifcomp.org
Global rank 2,465K (with a peak at 500K or so during comp and right after). 92% US. Keywords interactive fiction, if comp. No upstream sites.
ifarchive.org (inaccurate due to mirrors?)
https://www.alexa.com/siteinfo/ifarchive.org
Global rank 808K. Keywords interactive fiction, if archive. Linked from tads.org and google.com