Using RSS readers like Google Reader and Feedburner you can use the addresses RJF provided to see new threads away from Zilvia.
For example, I use netvibes.com as my homepage and mobile homepage. They allow you to add RSS feeds (like the one RJF posted) to your homepage so you can always see what's new on that site, in this case Zilvia. Now since I have my mobile phone pointed at netvibes for my homepage I can also get all Zilvia updates on my phone.
Not sure if that makes more sense or not, check out
Google Reader and add the links he posted and you'll see what I mean. It'll give you a list of the top X number of threads on Zilvia.
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As a side note, any chance RSS will be rolled out to individual threads/boards in the future? I know that's a big undertaking but it would be an awesome addition to this functionality.