Not really an add on,although I would think it is possible to create a script that one could integrate into the irc web chat page.
Skype chat is good for an irc user base to have a video chat that they have spawned from the text chat in the irc.
To find other users for a skype session can be found in irc rooms.although I wouldnt spam the rooms by constantly barraging the users with their skype id.
But to ask people you know in private message or even announcing it in chat now and then isnt all so bad.
I used to not be so easy on this.but it actually is good for our irc chat to allow users to do this.because if a feature is needed we cant provide then we need
to not get so bothered and call it advertising when others are looking for others to skype with,I dont think I would ever allow people to post other irc networks although.I never been much on that.its spammy and its lame.go build a user base dont attack other user bases to feed your chat.
If you need my skype id although it is “jesusrocksonirc” although Im never on it.Im actually not much for audible or video chat.too many distractions for me.