If you are a member of PTClickers, there have been some major changes to the site you need to be aware of. The admin announced on January 26th that effective immediately, free members would no longer be earning cash on the site; however, credits earned on the site can be used by free members to promote other sites.
There are no ads on the site for this week (until February 1st). During this time, everyone who is a free member that has reached the $9.99 minimum cashout is requested to email their username, and amount requested to firstname.lastname@example.org - after February 1st, all earnings that have not been requested by free members will be converted to advertising credits.
More details are in the PTClickers forum, if you wish to read more about it.
Though I understand the admin's reasons behind the decision, I'm not sure how well this will go over as the only upgrade options offered by the site now are annually and start at $49.95 for a year - monthly subscriptions and smaller upgrade amounts tend to go over better with a membership overall, I feel. For me, I often turn my earnings on PTC sites into advertising anyway so it doesn't make that much of a difference for me, but I guess we'll see how the site fares in the future with the new terms.