The introduction of Google’s Priority Inbox in GMail was hailed by many as a step forward for email. Here finally was a way to not simply filter email in to spam and regular email, but a way to filter on what you read and replied to most. Though the service has its share of people who don’t seem to see the benefit – like GigaOM’s Mathew Ingram, who simply finds that he can prioritize fine on his own – most of the reaction was pretty positive. Primarily, I’ve found that Priority Inbox works best for separating out those emails that you’ll read ‘eventually’ and the ones you want to read right now. Perhaps the…