[LPisGood]

Useless is perhaps a but harsh. It tells you something.

[spott]

Only if you know the data distribution.

It is pretty easy to get 99.99% accuracy on a dataset that is 99.99% a single class for example.

[dymk]

It tells me nothing because it doesn’t say if they mean precision or recall

[LPisGood]

It very much tells you something. Accuracy is a measure of overall correctness. Accuracy is something different than precision and recall.