I just filled in the online survey thinking I would be helping PC Advisor. About 35% of the questions related to PCA the rest were personal and in some instances where you may not want to enter a reply (such as household income)there were no alternatives. It even asked about employment(in my case I'm retired) but then followed this with questions about my company and it's IT. Again with no chance to say that the question was irrelevant. An example being how many people are employed at your current location. Figures ranging from 1 upwards but again no alternative. In my case no-one is employed so I put 50000+. I feel this is not a PCA questionare but a way of finding out your details so that the company can probably sell them on to other firms to bomard you with e-mails and junk mail.
if you don't want people to know that an un-named retired person has an unknown income, don't take part in the survay. A survay is normally designed to get your details, so that the info can be sold on.
This then pays for the prize, and generates a profit.
Those that purcase the results use them to decide if it's worth them sending snail-mail spam to the survay filler-in.
I take part, if I would like to win the prize. I know I will get some Bumf as a result...
I did it directly from this site, not e-mail, and was also perplexed that after filling in 'retired' I was presented with lists of questions about 'your company' and there were no alternatives so I filled them in as if I were still employed. Rather defeating the whole object.