Personally, I get much value in reading the Boarding Area blogs. I read several of them daily and get a lot of good advice out of them. True, many of them push the the products that provide the most profit to them. But, hey, that's what most well run businesses do.
Pushing high profit products doesn't make their advice wrong. If you don't like reading the blogs, just say no and stop reading them.
As far as the Chase BA Visa goes, this year's offer is just as good as last years IF your intent is to get two business class tickets to Europe by spending 30k on the card and getting the 2 for 1 offer.
I got the Chase BA Visa last May and spent $30k on it (did some major home improvements). By doing this I earned 137,500 Avios. My fiancee and I are going to Europe for our honeymoon this fall in Business class on BA. DEN-LHR-CDG-LHR-DEN These two tickets cost us a total of 118,000 Avios and $2000 in fees. In return, we got business class tickets valued at a minimum of $6k and I still have 19,500 Avios in my account Not bad for one card signup and $30k in spend. Try to match that with any other current card offer!