You all know that I’m a huge fan of aideRSS and have been using it religiously since I found it.  Today, no kidding, they’ve announced their Firefox extension for Google Reader that allows you to filter your posts with PostRank right there in GoogleReader!
Although you can consume any AideRSS PostRank enhanced feed in your RSS reader of choice, there is administrative burden maintaining your feeds outside of where you consume them. We wanted to provide a superior user experience that didn’t require leaving GoogleReader to manage the filtering of your RSS feeds.
The GoogleReader Firefox extension is the latest AideRSS weapon …read more

Louis Gray commented a week ago on how poorly Google Reader updates feeds, in direct contrast is this post from Greg Reinacker on how NewsGator works:
Category A: these are feeds that are needed by certain commercial syndication services customers with extremely tight SLAs – some of these SLAs guarantee content available within 2 minutes of publication in a feed. Feeds in this category are retrieved every 60 seconds. Exception – if a feed reliably pings our system with updates, the poll-retrieval interval may be dropped to a lower category; however, if the feed does not appear to ping us with …read more