Where to sell/market excerpts from books

Have you created an author dashboard on Goodreads? You can share stuff on there.

For your published work, make sure you have clearance from the publisher before posting it anywhere. They may have a limit of "X number of words" you can use for promotions like that. Also, Amazon generally has a "look inside" feature for most books so people can take a peek and see if they like the writing.

Oh, and make sure you inform anyone you sub any unpubbed work to if you put it up on the net somewhere public (not necessarily in a password protected crit forum like SYW here on AW), as you may be screwing yourself over. Can't recall the term off the top of my head, but I believe you're giving up "first digital rights" or some such thing.

Will try to return later with a link.