twitter is supposedly on everyone's mind

so i see a tweet from thisweek@thisweekabc

official twitter account of abcnews' this week with stephanopoulos

so i link over to their account

says they have 229 thousand followers

it looks like no tweet of theirs in the last 4 or 5 days

has over 50 likes or whatever

how many real people vs bots are actually on twitter?