Audience and purpose
The same criteria (on the left) can be used to evaluate internet sources. However, it's a good idea to pay special attention to the issues below.
Google finds everything?
Openness of internet
Content and purpose
Origin of information
1. Professional information, such as publications of professional organisations (for instance Federation of Finnish Enterprises or Finnish Real Estate Federation), interviews of professionals or empirical information at your workplace.
2. Official sources, such as data and research published by public authorities: Statistics Finland, Finnish institute of Occupational Healt, Finnish Food Safety Authority, etc.
3. Scientific research articles, reports and doctoral dissertations, in some cases pro gradu theses. Theses from universities of applied sciences are not recommended sources as such. However, you may find ideas for topics or research methods in them. You can also find interesting sources in their bibliographies.