Rahab's a whore?

When ever I hear of anyone talk about Rahab they generally say "Rahab the prostitute" but why can't they just call her Rahab. It's not like it's such a common name that you have to differentiate between the immense amounts of Rahab's that are over taking the Bible.

Ok but to be fair I can sort of understand why people always remember her as a prostitute when she is introduced to us in Joshua 2:1
Then Joshua son of Nun secretly sent two spies from Shittim. "Go, look over the land," he said, "especially Jericho." So they went and entered the house of a prostitute named Rahab and stayed there.

But lets remember for the good that she did. She realised that the God of Joshua was 'The Only True God' she helped the two spies from Shittim by hiding them before the King of Jericho. She went against her culture and home for God so in my books she's a hero. She then later hooks up with Salmon and they have Boaz who later leads to Jesus. (Matthew 1) So I say get off her back, cut her some slack. We all have pasts that are considered to be messy in the eyes of others and the whole 'those who have committed no sin can cast the first stone' and 'before you try to remove the twig from someones eye, remove the log from your own'

Rahab should be remembered for more than just being a little whore but for what she did after being saved.