Very carefully. You've asked a question that doesn't have a simple answer. I've been thinking about this for some time - the net of course has to be part of the solution. One thing I think could work, would be for each MP to list all of the pending bills, and ask voters to "vote" on them. This would give the MP a reading on opinions in his or her riding. This could also be used for other questions about upcoming legislation (would making this change be better for example).

This could be powered quite simply by IP address. The Internet Service Providers can supply lists of IP addresses within a riding, and use that to send the voter to the correct MP's page.

Would this fly? I strongly doubt it. The MPs have no reason to want a system like this, and they would have use it for it to have any utility. Of course we could just set it up on our own, and wait till they notice it...