5 Contractor Referral Sites Like Angie’s List

Social Networking

5 Home Service Sites Like HomeAdvisor

Work & Education

6 Service Finder Sites Like Thumbtack

Work & Education

5 Freelance Labor Sites Like TaskRabbit

Work & Education

6 Word Cloud Sites Like Wordle

Research & Knowledge

8 Plagiarism Checker Sites Like Turnitin

Work & Education

6 Book Summary Sites Like Sparknotes

Research & Knowledge

11 Affiliate Marketing Sites Like Clickbank

Work & Education

8 Job Search Engine Sites Like Indeed

Work & Education

7 Business Networking Sites Like LinkedIn

Work & Education

7 Search Engine Sites Like Google

Research & Knowledge

7 Online Education Sites like Coursera

Research & Knowledge