[buran77]

Even for civil law where the bar for the evidence is lower, it's hard to make a case that someone who posted wrong details on a free blog and didn't make money off of it should cover the damages you incurred by traveling based on the advice alone. Not making any reasonable effort to fact check cuts both ways.

This is a matter of contract law between the two companies, but the people who randomly read an internet blog, took everything for granted, and more importantly didn't use that travel agency's services can't really claim fraud.

Just being wrong or making mistakes isn't fraud. Otherwise 99% of people saying something on the internet would be on the hook for damages again and again.