[0]European Commission defines personal data as:
>Personal data is any information that relates to an identified or identifiable living individual. Different pieces of information, which collected together can lead to the identification of a particular person, also constitute personal data.
Thus, anything you wrote on any site, if it is not anonymised and still linked or could be traced to your account is a personal data.
And even when it is anonymised:
>Personal data that has been de-identified, encrypted or pseudonymised but can be used to re-identify a person remains personal data and falls within the scope of the GDPR.
Thus, anything you wrote on any site, if it is not anonymised and still linked or could be traced to your account is a personal data.
And even when it is anonymised: >Personal data that has been de-identified, encrypted or pseudonymised but can be used to re-identify a person remains personal data and falls within the scope of the GDPR.
[0] - https://commission.europa.eu/law/law-topic/data-protection/r...