This is a great project which help holding the MPs to be accountable.
It is worth to share as a model to blogosphere and encourage for more public participation to this net.

Regarding the obstacles, Gilani, the founder, need to be persistent in maintaining its independent role/analysis in order that MPs and public's trust is strengthened. Beside the research/evaluation methodology that Mumbai Votes is currently employing, a great public participation tool should be incorporated. For example, public pool or online survey where public can voice their opinion. This will give more visibility about the Mumbai vote and also encourage public to visit this page.

Generally, i like this project idea where MPs is watched for their promise to be put into action.