Shameless plug, but should you decide to follow the article and move to New York, my startup can help you figure out where to live and hang out: http://nabewise.com/nyc . We also cover many other places that engineers might want to live.
This site looks pretty cool. I'd like to see some more cities listed.
We're working on it! Our current plan is to get new cities up every week or two. We perform a lot of curation and research on top of raw data sources to get the cities in. Any places you'd like to see in particular?