If it was you that wrote it, then it has some legal weight. It doesn't indicate that you read something, but that's not the point; it indicates that you're agre

If it was you that wrote it, then it has some legal weight. It doesn't indicate that you read something, but that's not the point; it indicates that you're agreeing to be bound by whatever was written. There's inherent difficulty in proving that it was actually you, but that gets handled as its own problem. Someone forging your signature could get you dragged into court for breach of contract.