My apologies if you're trying to get my help with add-ons lately, I've had a lot of requests for features and fixes and I just can't deal with them all at once. I guess that's what happens when you get ~10000 new users in a month. On top of all this I've just discovered that all my new add-ons are broken on Firefox nightly builds. Oh, and I've had the flu for the last few weeks.
If you do need to ask me something, please do email, just don't expect an answer straight away. Slipping something into my paypal account will move you up the queue ;-)
My apologies also if you're an AMO reviewer and having to put up with new versions every few days.
Update: seems I've also run into an odd AMO bug affecting Open With 5.0.1. Get 5.0.2 instead.