The search seems to function very well at least in Helsinki. The suggested routes do make sense. One bus line has a slight error, though, as the map shows the 77N as turning away from Hämeentie, going 50-ish metres along another road, making a U-turn and returning to Hämeentie. This is not visible in Openstreetmap.org or at HSL.fi.

How is mapy with regard to confidentiality?