YSTV maintains an IRC channel on Freenode, #ystv. The HexChat client is recommended, though you are free to use any you wish. A web client is available at webchat.freenode.net. IRCCloud provides a good mobile client, with a week's free trial of permanent connection. YSTV are also credited with the creation of the NaSTA channel, #nasta at the NaSTA North Conference 2014.
It is recommended you register your chosen nickname with NickServ in order to prevent impersonation. Type
/msg nickserv register <password> <email address> to register your name. You'll receive a confirmation email with a code. Once you're registered, upon entering any channel on the same network you can type
/msg nickserv identify <password> to confirm your identity and boot off anyone using your name.
The channel also plays host to a number of bots, providing monitoring and other features.
!weatherwill pull a summary of the current weather local to YSTV. For more detail, use the Electronics department's live weather page.
!WEATHERdoes something different entirely.
!quote <string>gets Morrissey to pull a quote from the quotes board. Omit the search string for a completely random quote.
!coin <number_of_flips>gets Morrissey to flip coins for you.
!timetells you the time according to YSTV.
!nexteventdisplays upcoming items in the schedule.
!floodedprovides a bite-sized IRC-based alternative to hasystvfloodedyet.com.
!slap <user>provides a YSTV-specific alternative to the IRC /slap command.
!kill <user>gets a bit more violent.
!cuddle <user>seems, on the surface at least, to be an antidote to
!kill. Variables by Greg Ebdon.
!random <user>is a special window into the mind of Helen Hobin.
stream-ystv watches any RTMP stream it is told to watch, and reports when the stream goes black or silent or stops working. Further commands for control can be found at the Github page. 
xymon-ystv is the Xymon monitoring service bot, reporting any issues that Xymon picks up on. The script has been somewhat modified from its original form, to remove the
drop command and anything other than red status'.