Bryght sites are even more effective than blogs for achieving a high Google rank. Why? Two reasons.
First, Bryght sites have blogs (and image galleries, event calendars and lots of other useful community oriented features that most blogs don't) so all the tricks about blogging 'compelling content constantly' using categories named after your keywords work too.
Second, Bryght sites have a full featured RSS aggregator which 90% of blog systems (except Manila's limited aggregator) DON'T have. Using PubSub and Feedster for the phrases you wish to rank high in and then subscribing to the feeds from these searches in the Bryght aggregator is another way to increase your search engine rank.
In sum, the rankings were achieved by defining a niche, targeting search phrases, naming categories for each phrase, and writing effectively about subjects related to each category.