Alternate locations you can post your Twine (and other) IF projects for free and link to:
The default that’s been around for generations. Curated submission, accepts IF games, tools, and related files - no registration necessary. Best place to auto-link from IFDB.
Though primarily a site for Quest games, they will also host parser and HTML web games with a download link or a “play online” button. Requires registration.
About two hundred thousand indie games of all types including IF and VN, provides a storefront, allows payments or donations or free download, and in-browser online play with customizable landing page including optional screenshots, message board, and multiple file downloads per project. Projects may also be hidden (“draft mode”) before release and linked to with a secret URL for beta testing. Requires registration.