Both RLN and Mayfly are correct - and I only allow bots that may have a positive impact on IA.
(Gnip aggregates any posts of interest (that are in the public areas) for use in social media/apps for anyone with interests in areas such as aviation.
Its not online now .... but certainly seems correctly classified as a bot in its offline state. Are you saying it shows as a regular member when active?
Its online most of the time, purely because its a machine and machines never sleep (Im sure thats a line from The Terminator

)
Its always been around, but only recently did I 'classify' it with IA (therefore you now see it in online members), which means I can further control what it does/sees.