Many items pulled from: Readers Advisory Tools For Adult Readers: A Five-Year Retrospective Selected Bibliography (October, 2008), by Mary K. Chelton (Professor, Graduate School of Library and Information Studies, Queens College, Flushing, NY 11367; mchelton@optonline.net)

Adult Reading Round Table
https://www.arrtreads.org/

Affaire de Coeur (Romance)
http://www.adcmagazine.com

African American Literature Book Club
https://aalbc.com/

AllReaders.com
http://allreaders.com/

AuthorsontheWeb.com
https://authorsontheweb.com/

Beau Monde Chapter of RWA (Regency Romance)
https://main.thebeaumonde.com/

Book Lust / NancyPearl.com
https://www.nancypearl.com/  

BookBrowse Book Finder
www.bookbrowse.com/2cat/

BookForum
www.bookforum.com/

Booklist Online
https://www.booklistonline.com/  

Bookmarks Magazine
https://www.bookmarksmagazine.com/

BookPage.com
https://bookpage.com/

BookReporter.com
https://www.bookreporter.com/

Books in Series Database (Nebraska Library Commission)
https://nlc.nebraska.gov/ref/booksinseries.asp

BookSpot.com
http://bookspot.com/

Book-TV (C-Span2/Nonfiction)
https://www.booktv.org/

Bookwire
https://www.bookwire.com/

Christy Awards (Christian Fiction/Inspirational)
www.christyawards.com/

Comics Worth Reading
https://comicsworthreading.com/

CrimeCulture.com
https://www.crimeculture.com/

Deadly Pleasures (Crime/Mystery)
http://deadlypleasures.com/

Euro Crime
http://www.eurocrime.co.uk/

Fantastic Fiction
http://www.fantasticfiction.co.uk/

FictionDB.com
https://www.fictiondb.com/

Fiction_L Listserv
https://ccpllists.cuyahogalibrary.net/scripts/wa.exe?A0=FICTION_L

FreshFiction.com
http://freshfiction.com/

The Gay & Lesbian Review Worldwide
https://www.glreview.org/

Goodreads
https://www.goodreads.com/

Hellnotes: Fiction, Movies and Art Dedicated to the Horror Genre
www.hellnotes.com/  

Historical Novel Society
https://historicalnovelsociety.org/

Horror Writers Association
https://horror.org/category/blog/

Jewish Book Council
https://www.jewishbookcouncil.org/

LeeWind.org (Gay and Lesbian Book Reviews)
https://www.leewind.org/

LibraryReads
https://libraryreads.org/

LibraryThing
https://www.librarything.com/

Nancy Pearl’s Four Doors to Reading
https://teralynnchilds.com/nancy-pearls-four-doors-reading/

No Flying, No Tights (Graphic Novels)
https://noflyingnotights.com/

NoveList
https://www.ebscohost.com/novelist

PPLD Find a Good Book
https://ppld.org/find-a-good-book

Reader's Advisory: The Complete Spectrum (Handouts from a NJ Regional Library Cooperatives presentation by Mary K. Chelton and Duncan Smith)
http://www.sjrlc.org/readersadvisory.htm

Readers' Cafe (Montgomery County Public Library)
https://mcpl.blog/category/readers-cafe/

Reading with Purpose: Nancy Pearl at TEDxSeattleU
https://www.youtube.com/watch?v=WjDMbixPSeQ

Shelf Awareness
https://www.shelf-awareness.com/

Shelf Talk (Seattle Public Library)
https://shelftalkblog.wordpress.com/

Stop, You’re Killing Me! (Crime/Mystery)
http://www.stopyourekillingme.com/

Thrilling Detective
https://www.thrillingdetective.com/

Time Travel Romance Writers
https://timetravelromancewriters.com/

Ubiquitous readers' advisory services for public libraries' online communities (Slideshare presentation, presented by Paul Brown, June 2011)
https://www.slideshare.net/BestSellers/ubiquitous-readers-advisory-services-for-public-libraries-online-communities

Western Writers of America
https://westernwriters.org/

What Should I Read Next?
https://www.whatshouldireadnext.com/

Whichbook.net
https://www.openingthebook.com/whichbook/