Sign up : where a site address will be given to register and verify your email id you will be paid
Click : where you have to click on a given site's advertisement
Search : where the worker will search on Google, Yahoo or Bing
Bookmark : delicious, digg, reddit, Stumbleupon you must have an account on these sites to bookmark or link back to the given site
Social Network Sites : where you have to like a Facebook page, Retweet on Twitter and plus one a Google profile
Voting & Rating : have to vote or give stars or rating as instructed by the employer
Yahoo Answers : you must have a yahoo answer "level two" account and answer some question to do this job
Forums : Have to make an account on the forum to make some post or thread
Download-Install : to complete this category you have to install some software or download some files
Comment on blogs : have to find a blog from Google related to some keyword and comment on the blog
Write a review : Blog or website owner will ask you to write some review on your blog or on their blog
Write an Article : website owner will ask you to write a unique article related to a given keyword about 300 words
Classifieds posting : like olx.com or cragislist.com
Blog/Websites : you must have your own blog indexed in Google and have to write a unique 100 or 50 word post on your blog.