What countries consider housesitting an exchange of services

[Silversitters]

There is a recent thread about Ireland

Ireland Petsitting (Visa Needed?)

When I entered Ireland yesterday (on a US passport) I was told that I can only “pet sit” for 2 weeks. They put a note on my passport stamp, and asked to see my exit airline ticket. Luckily I’m only here for 9 days, but I did not know this was a possibility. Anyone have more information about this. I thought I could just petsit on a tourist visa. She said I am “exchanging services for free rent” so it would require a special visa if it was longer than 2 weeks.