Thanks to all responding, there is rather a mixed view.
Worrying thing for admin should be that (as I write) over a quarter of the voters said they are forced to leave.
If PTC ads are not staying, they could easily be replaced by offerwalls like PTC Wall, Clix Wall and Minutestaff - this would maintain the PTC aspect of the site without being a PTC itself. However, I advertise on those 3 sites and pay with PayPal, so I have no understanding in the thinking that we would get PayPal back by removing PTC ads. I thought PayPal's issue was with revenue sharing, and fully believe it was the 8-level referral program that PayPal didn't like. However, who needs PayPal anyway, we have enough payment options on ClixSense already.
I actually think the two factors affecting PTC ads on ClixSense is:
a) The rise of other PTC sites offering less quality advertising at a lower price
b) ClixSense offering higher quality advertising at a much higher cost
I question whether there is much response to PTC ads, they are a low quality form of advertising as the main incentive to members is clicking the ad to earn money. This means advertisers are simply getting hits on the website which increases rankings, so why pay extra for the 'higher quality' advertising? You can get 1 million ad views for $255 on PTC Wall, on ClixSense this cost over $1200 and meant I rarely advertised here.
On some sites, members click PTC ads with a value of $0.0001 (meaning it takes 100 ads to earn $0.01). If members want to do this, surely the answer is to lower advertising costs on ClixSense and pay less to the members clicking.
As for ClixGrid, why remove it - it is fun, and the chance of winning keeps members clicking. Also, in the worse case scenario, members will click 20 squares a day to get their bonus - that is guaranteed views for advertisers, so it should make money for ClixSense.
For me, the removal of the 8-level referral program is questionable... if you can gets lots of referrals who in turn get lots of referrals themselves, and all upgrade there is mega money to be made. But then, we have 8 million members on ClixSense already so it is tough to find active referrals... most of mine have joined and not even been active enough to cash out. This is a people problem, not a ClixSense problem so I would ask admin to keep it available for those who can actively get referrals. Of course, this means keeping the upgraded membership... without PTC there is one option, maybe add 5% extra on level 1 referral activity if upgraded, this would encourage members to promote ClixSense more.
I fear ClixSense will rapidly decline in popularity, and unless that is admin's wishes (maybe after 10 years he has had enough?), I see no sensible reason for the decisions made yesterday.
Apologies for edits, not really 100% with it this time on a Sunday morning