Well of course they worry about it. I can ditch Google and go to Yahoo, DDG, Bing, hell Lycos might still be around, if the Google homepage takes too long to lo

Well of course they worry about it. I can ditch Google and go to Yahoo, DDG, Bing, hell Lycos might still be around, if the Google homepage takes too long to load. It's been a while since I saw the story about this, but I came away with the impression that users weren't leaving for another search engine; rather, they were deciding that searching (for whatever often-trivial thing) was not an engaging use of their time. I'd think that would be of especial concern to something like Twitter.