Online Book Club - OnlineBookClub.org is an awesome site for readers. We have international book discussions, virtual bookshelves to track what you have read, original book reviews and much more!
Amazon Mechanical Turk - The online market place for work.
SerpClix - SerpClix is a click exchange network used to send more real clicks to your Google SERP. You can click to earn money or buy clicks to rank higher on Google.
Universal Data Tool - Machine learning, data labeling tool, computer vision, annotate-images, classification, dataset
Readers’ Favorite - Readers' Favorite provides free book reviews for authors and hosts a respected annual book award contest.
Labelbox - Build computer vision products for the real world