The Decisions Page has several indexes including one that links relevant decisions to sections of the Act.
An interesting recent decision (Murphy Schmidt Solicitors and Department of Justice and Attorney General, Application no. 210083), PDF involved consideration of an important issue - whether the public interest of enabling the applicant to evaluate and possibly pursue a legal remedy against a third party, justified disclosure of information concerning the personal affairs of others.
Assistant Commissioner Henry, acting on the precedent of an earlier decision, ruled in favour of disclosure. While such a public interest needs to be weighed against other considerations, and to the extent known, the greater the loss or damage and or the prospects of success will also be relevant, the test laid down is that the FOI applicant in these circumstances needs to demonstrate that:
"(a) loss or damage or some kind of wrong has been suffered, in respect of which a remedy is, or may be, available under the law;
(b) the applicant has a reasonable basis for seeking to pursue the remedy; and
(c) disclosure of the information held by the agency would assist the applicant to pursue the remedy, or to evaluate whether a remedy is available, or worth pursuing"