I did some polls inworld on this issue, and here's what I got:
Do you plan to submit to new verification required to visit explicit adult parcels in SL?
Baileya: Total Ballots: 73
21, No, I don't wish to visit adult sites.
18, No, I will do what I wish on my own land.
17, No, I don't trust verification companies.
12, Yes, it's not a big deal at all.
5, Yes, but I'm not happy with it.
Ross: Near Ginko ATM
Total Ballots: 89
22,Yes, it's not a big deal at all.
22,No, I don't trust verification companies.
18,Yes, but I'm not happy with it.
18,No, I will do what I wish on my own land.
9,No, I don't wish to visit adult sites.
Ross: Infohub Memory Bazaar
Total Ballots: 151
54,Yes, it's not a big deal at all.
36,No, I don't trust verification companies.
25,No, I will do what I wish on my own land.
19,No, I don't wish to visit adult sites.
17,Yes, but I'm not happy with it.
Thus, 49 do not plan to visit adult sites -- 15 percent of those polled. 88 said sure, they'd register, it's not a big deal at all -- 28 percent. 24 percent said no -- and cited the verification issue as their reason, and 19 percent planned to buck the system, evidently, and said they'd do what they wish on their own land. 15 percent said they weren't happy with it, but would go along (pecentages are rounded up). So...that means
43 percent planned to register, even if they weren't completely happy; 15 percent didn't plan to go to the adult sites; and 43 percent said no, they wouldn't register due to the concerns about the verifying company or the frontier spirit of wishing to do WTF they wanted on their own land. So...as of today, there is an even split between those who plan to register, and those who don't, and a surprisingly large percentage of people saying they aren't interested in adult activity.
This is a very, very different picture than you get from the Linden Official blog, Hamlet Linden's New World Notes, the SL Insider, and other official FIC sources. If you're a business owner in SL -- question it. Your customers may not be leaving, and they may not be fussing as much as the forums FIC.