Ask HN: Montreal hackers, please help some new arrivals

My cofounder and I are moving to Montreal very soon for the rest of the year, hopefully longer. We have some contacts there already, but we wanted to get some insights from Montreal HN readers as well.

We're curious about the following:

1. What neighborhoods/areas would you recommend most for startup living? We're willing to pay up to 1000 CAD/month for rent. Are there any good sites (besides the obvious craigslist, etc.) that are good for rentals/sublets?

2. What startup, e-business, (Ruby) hacking groups/events do you recommend?

3. What cultural, etc. events/locations are must-dos?

4. If you can disclose it, what are you hacking/working on? (I can't disclose much yet, early stages, but it's basically a niche content site, also hacking on some (human) language learning tools for fun).

Merci beaucoup!