That's no longer true.
Tax information isn't being posted online now in Sweden you can make a "FOIA" request but you have to have a legitimate reason now to obtain it.
The public tax records were too often abused for harassment, political extortion and plain crime such as burglary and fraud so they pulled the plug on online publishing of tax records.
Is this from personal experience? because from all what i could gather since 2011/2010 tax records are only issued on demand using a FOIA request form and you need to specify a legitimate reason to access them.
Do you get full W2 type info, or just the joint income of the family? It would be hard to tell a coworkers income if it is lumped in with their spouses income + investment income + whatever.. vs seeing line item income for that person.
The public tax records were too often abused for harassment, political extortion and plain crime such as burglary and fraud so they pulled the plug on online publishing of tax records.