Has anyone here used InPage for writing Urdu? I'm thinking of developing a free web or mobile app based alternative. What are your thoughts?

Specifically, here are a few questions I'd love to hear your thoughts on, especially if you've used InPage before:

1. What do you normally use InPage for?
2. Why do you use InPage, instead of say, MS Word with Urdu font?
3. What do you like about InPage?
4. What do you dislike about InPage?
5. Would you consider using a browser based alternative to InPage?

Curious to hear your thoughts!