I am hoping to use some self selection survey data (it's from those awful things that pop up on the start page of a website asking if you have 5 minutes to spare).
This is for business decision making so obviously I don't want to overstate the importance of any findings.
I have found one public access paper that deals with "Heckman Corrections" here:- http://onlinelibrary.wiley.com/doi/10.1111/1467-6419.00104/pdf
Am I right in thinking that there are not any statistical methods in common use for correcting for self selection bias?
Are there any simple ones that would be useful for a quick and dirty decision making process, even if they're not perfect?