Yes they will see it in their @replies.
I am not sure but this is what I want to know as well!
They can only see a reply if they are following you...But it wont show on their profile, It will show on their home page where they can see what all their followers are doing...or up to. It WILL show on your profile though...Get it?
You can obtain someone's Gmail address from a Google Plus reply link by simply following the link to his profile.
Yes you can still tweet them and they will still see the tweet in their mentions.
When you mention someone on Twitter, you either click 'reply' on one of their tweets or you open their profile and write your tweet in the box provided. You can also simply mention in your tweet with "@username". Take care there's no space between their username and the @ sign though.
Yes sometimes as someone I know got a signed photo it sometimes takes up to 4 months or even longer for them to reply though (:
Yes and No. Replies made by just typing @username will be updated to all, replies replied by clicking reply in someone's tweet will be updated to your followers who follow that particular person whom you replied, Otherwise it won't visible to them directly. However they could see your reply by visiting your profile.
There is no way for fans to email David. Whatever email addresses David has are private. David has a twitter account @DavidArchie and every once in a while he will reply to a few twitters. You need to be real lucky to get a reply though.
1.Go to a tweet by the person or persons you want, and type your tweet in that box. 2.You can send a private message by clicking on the Message option in their profile,but it is only possible if they are following you.
A question like this is best asked on a private server site, where your more likely to get quicker reply from someone who knows. I'm creating a private server with my friend and you need a client and a source that will work together for your weapon.
There is no problem with reply to an old tweet by someone famous.
Some do, some don't. They can't reply to everyone though.