Iori: It does to an extent. If you click on "#somechan,0" or "#somechan,#another" you will only join #somechan.

I was actually basis that post off what Iori said. The fact that clicking on the #1,0 will join 0 also, just $comechan,0 will join #somechan. I was testing it out, and the only reason it works is because most users tend to click a link in the cente. Being there is a 0 in the center of the link, it joins the 000 side fo the comma. (#1,000)