I spend a lot of time in LFR, sometimes 45 mins to an hour. And, i do other things while i am patiently waiting... sometimes i get up and walk away from my computer (egads!) and come back a few minutes later only to find out i missed the invite and am now out of the queue. Start all over.
As a suggestion (and forgive me if this has been discussed before), it would be a GREAT feature if while in LFR you could have an option to send me a text message whenever the raid is ready and my invitation goes out. That way I could get back to my computer and accept the invite before I am timed out (and have to wait another 45 mins).
Just an idea, but it brings together the mobile WOW app and the actual in-game experience.
I would love a feature like this, because it seems at least one LFR wing per week I have 20-30 minutes in to a 40-50 minute estimated que, go to get a drink/use the bathroom and come back in 1-2 minutes and notice I've lost my spot. Frustrates me to no end that once I join the que, I pretty much can't get up from the computer for almost an hour because I have no idea when the que is going to pop, and the penalty for missing the que is another 40-60 minute wait.