This is a new feature from clixsense, i see the update and this is the explanation from FAQ on clixsense :

What is the Daily Checklist Bonus?

The Daily Checklist not only helps you keep track of your daily ClixSense activity it also rewards you for being an active ClixSense member.
For each day that you complete your Daily Checklist a bonus will be added to your account balance at the end of that day. Premium members will earn a 10% bonus of their personal earnings, while Standard members will earn a 5% bonus. The bonus amount you can earn is unlimited; it only depends on your activity.
This bonus will be calculated from your total personal earnings that include your PTC Ads clicks, ClixGrid prizes, completed CrowdFlower Tasks and completed Offers. Other bonuses and referral commissions are not included.
In order to complete the Daily Checklist you need to:

1. Click at least 2 PTC Adverts of any kind;
2. Click at least 10 ClixGrid squares. The more you click the more chances you have to win ClixGrid prizes which will then be counted towards the bonus as well (for example, if you earn the $5.00 prize you will earn an extra $0.50 with the Daily Checklist bonus at the end of the day);
3. Because not everyone has offers or tasks available to do, and to give everyone a chance, you are required to complete only one of the following:
   1. Complete at least 10 CrowdFlower Tasks; *
   2. Complete at least 2 offers from the offers page; *
4. Visit at least one page of our forum. Posting is not required.

* Regarding the Tasks and Offers, if for some reason you do not get credit for completing them on a given day, or if payment is delayed into a following day, the checklist of that day will not take them into consideration; payments are not retroactive, they will instead count only towards the day when they are actually received.
There will be slow days, with not enough Tasks or Offers. You may or may not be able to complete your checklist in such days. We cannot be held responsible for this.
These conditions may change at any time and an announcement will be made in that event.

Today was fun because I can do some of the thousands of tasks, rather I can get $ 0.21 from 7 tasks are completed.  

 
The task seems more and more lately coupled with the offers section that offer such a hefty fee to watch a video. Unfortunately there seems to be little problem in the offers section, because every time I try to click any links, the pages that have changed to an error: (
Hopefully tomorrow will be better again and the offers are not always error.

This is my clicks statistic for 13th july, have take a look ^_^

I registered in clixsense since September 27, 2009, but did not do anything since then, not even single click of ads.
Entering the year 2010, still I have not been doing anything in clixsense, just log in and then log out.
Entering the year 2011, in May 2011 I began to look back to my account, it is still active, I started to click ads, although occasionally, total income from the month of May 2011 to December 2011 USD 2.5790.
 
Finally Beginning in 2012, I decided to seriously pursue the return of all PTC sites that I have a list, and finally in May of 12, I have enough funds in my account balance to pay for upgrades for one year for $ 17.

I am grateful for every penny that I got from here, more than that, I have friends from different parts of the world that really helped me, they shared knowledge about how to execute the strategy worked as PTC worker.

Finally, after quite a long time to join in clixsense, I decided to upgrade the account to a premium member, I do the upgrade on the 12th of May 2012 and now has two months since I did the upgrade.


May Earnings                                        = $ 1.2330
June earnings                                        = $ 1.8790
July earnings until the 12th of july           = $ 0.7780

Total of click ads = $ 3.89
Total of completed tasks = $ 4.10

Not bad for a worker without a referral ^_^