I'm glad you know what you find useful but I don't think there will ever be one list that people will agree on since people are interested in different things. Someone might want to do first class international travel and someone else couldn't care less about all that hoity-toity stuff and wants to redeem awards to get their family to Disney world for free. Same with manufacturing spend, some don't want to bother so that type of blog is not useful for them. One person's heaven is another persons hell and all that. I guess you could put them in categories and then try to find a way to evaluate "usefulness" by category but I think folks will still disagree about ranking.