I agree that gmail only having offline for certain browsers is suboptimal for the web (though they claim, like amazon with their kindle app, that they will expand support), but it's worth noting that at least the gmail app includes an installable component equivalent to an extension...and there are plenty of single-browser extensions for every browser.
I am European as well, and although I completely agree that American people are the best part of the American experience (INS officials being an exceptions, because they are not humans, of course), there was this one exception the first week I came first time in my life to Boston. I was rushing to the revolving door and I saw a lady obviously some kind of professional who was rushing to the same doors. I have opened the door and hold it for her. I couldn't believe when I was slapped on my face and told she didn't need a help from a sexist pig. Fortunately, I have not gave up on being courteous and I have never repeated this experience, but this was surely weird situation.
I live in the Southern U.S. (Atlanta) and what I love the most about this place is how courteous people are. If I was walking towards a door and someone was there first, it would be uncommon for them not to hold it open, genders notwithstanding.
I am sorry you had this experience. There are always some people who take positive ideas to the other extreme and become exactly like the people they despise.
Because it is much more than that ... combines Read It Later, with Readability (Firefox add-on), and ability to download ePub to my N-900 (so it works virtually everywhere, not only on iP*). Also, there is no cost of using it ... if it goes away (or requires payment), I don't loose anything than one day worth of reading.