Perhaps you are looking for more legitimate download services like
http://www.download.com/
http://www.majorgeeks.com/
http://www.softpedia.com/
Anything that you get from a "survey" site is almost certainly loaded with malicious software one should always be extraordinarily careful when obtaining software from suspect sources, ESPECIALLY! as a domain administrator, if your computer is not clean, then that can compromise your administrator password. If this happens and your domain is put to illegitimate use under the terms and conditions of this hosting company you may and most likley be fully liable for any damages occurred to the businesses that are also hosted here.
i would strongly advise checking out any software that you think may be suspicious with
https://www.virustotal.com/ there is also:
http://www.threatexpert.com/
Chances are, that your computer is already compromised avoiding being infected these days takes quite a bit of experience at detecting what is legit, and what is malicious especially when it comes to download buttons. Here is one of the many places that you can go to seek help for free, however there is a limit to what they can do.
http://www.techsupportforum.com/
If you wish to learn more, there is this particular secret hidden forum where you can get training from Microsoft Most Valued Persons.
http://www.spywareinfoforum.com/topic/130139-boot-camp-anti-malware-training/
Also looking at a deeper level, there is also internals books, videos, forums.
https://technet.microsoft.com/en-us/sysinternals/bb545021.aspx
its also good to have a firm understanding of networking
http://www.amazon.com/Cisco-Complete-Reference-Brian-Hill/dp/0072192801
if you find the above a little overwhelming perhaps start here
http://www.elithecomputerguy.com/
The scary thing is that rootkits are getting so sophisticated nowadays once they are in you hare highly unlikely to ever really dig them out short of a format, its always good to have a computer (firewalled, locked down, and isolated from the rest of the network) or virtualized operating system, for suspicious files.
As for what your probably after by going to a survey site, i strongly suggest you read the news, and do your homework, there are many legal, ethical, financial and privacy implications not just for you but the internet as a whole.
http://torrentfreak.com/
As for website security, that im only still learning.... These are somewhat useful, and more direct to the point.
https://www.owasp.org/index.php/Main_Page
http://hakipedia.com/index.php/Category:Web_Application_Hacking
