Yes, yes, yes, yes and yes. In fact, I’ve been experiencing #3 for about the last hour:

The state of being ‘installed’ at a computer or laptop for an extended period of time without purpose, characterized by a blurry, formless anxiety undercut with something hard like desperation. During this time the individual will have several windows open, generally several browser ‘tabs,’ a Microsoft Word document in some state of incompletion, the individual’s own Facebook page as well as that of another randomly-selected individual who may or may not be on the ‘friends’ list, 2-5 Gchat conversations that are no longer immediately active, possibly iTunes and a ‘client’ for Twitter. The individual will switch between the open applications/tabs in a fashion that appears organized but is functionally aimless, will return to reading some kind of ‘blog post’ in one browser tab and become distracted at the third paragraph for the third time before switching to the Gmail inbox and refreshing it again.

The behavior equates to mindlessly refreshing and ‘lozenging’ the same sources of information repeatedly. While performing this behavior the individual feels a sense of numb depersonalization, being calmly and pragmatically aware that they have no identifiable need to be at the computer nor are they gleaning any practical use from it at that moment, and the individual may feel vaguely uncomfortable or ashamed about this awareness in concert with the fact that they continue to perform the idle ‘refreshing’ behavior. They may feel increasingly anxious and needful, similar to the sensation of having an itch that needs scratching or a thirst that needs quenching, all while feeling as though they are calm or slightly bored.

(via Five Emotions Invented By The Internet – thoughtcatalog.com)

Though they’re not really new emotions, just new situations that stir up unfamiliar combinations of emotion. The other experiences are:

• A vague and gnawing pang of anxiety centered around an IM window that has lulled.
• A sudden and irrational rage in response to reading an ‘@-reply’ on Twitter.
• The car collision of appetite and discomfort one feels simultaneously when using the internet to seek and consume images or information that may be considered unseemly or inappropriate. 
• The sense of fatigue and disconnect one experiences after emitting a massive stream of content only to hit some kind of ‘wall’ and forget and/or abandon the entire thing.