It would be great if the Steam Friends protocol could be integrated into some multi platform messengers like Miranda or Pidgin but that’s sadly not possible yet…
if someone’s further I interested in how the Protocol works and why it’s not possible yet have look at this wiki
^This.
I currently have Pidgin deal with my msn, xfire, and facebook, unfortunately, Steam is a tad more complicated.
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Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.