If you are attending the HP Discover 2011, or simply want to know more about the HP stuff, these are some of the Twitter accounts to follow:
@HPDiscover (the main Twitter account for the HP Discover 2011)
If you are attending the HP Discover 2011, or want to post your opinions or questions, better use the #HPDiscover hashtag on Twitter.
Other related posts:
A HP Discover blog index
Cash for clunkers at HP Discover 2011
HP Discover 2011 Las Vegas LiveShare Stream