Yes, it can be easily done with IFTTT.
I'm not quite sure what you mean. But Twitter and Facebook are two different things. Yes, I know you can post your tweets to Facebook, but I think thats as far as it will go.
No body can remove your post from facebook..he can hide you post from his wall only.
The padlock sign means the post's privacy setting is set to "Only Me" so only you can see it. Click on it and select another option, like "Friends", "Public", etc.
There are various services to post longer tweets. One is twitlonger.
You can't do that. You have to save the post and then post it on facebook.
wiki answers aparently
You spelt messenger wrong. And you don't 'do' images on Facebook Chat (there's no such thing as Facebook Messenger, I assume you are referring to Facebook Chat) as it is impossible. Email images, post them on Facebook, send them in the post. On Facebook Chat, you can only have conversations. Just get MSN. Idiot.
To highlight text in a Facebook post, you can use the following steps: Start typing your post on Facebook. Select the text you want to highlight by clicking and dragging your cursor over it. Click on the "B" icon that appears above the selected text to make it bold, or the "I" icon to make it italic. These options will help your text stand out in the post.
To get the answer to this you need to look at the Facebook security information.
On facebook, when you restrict a friend you are limiting what they see. They can only see things that you post that the public can see.
I don't think that you can. You can only put backgrounds on Myspace.
Take a photo from a Facebook site or app then it will automatically post or you might have to click something that say's post to Facebook.