Here's an alternative to Twitter Taste Live (renamed Taste Live so as, I suppose, not to be tied to the Twitter platform).  Wines of Chile, the marketing association set up a winecast among designated bloggers and eight Chilean winemakers each showcasing a release from their specific winery.  This sort of outreach will become more ubiquitous and sure is cheaper than flying the winemakers up from Latin America.

Wines of Chile Onlne Blogger Tasting May 20th from john witherspoon on Vimeo.

For more info go to John's blog http://anythingwine.wordpress.com/2009/05/21/wines-of-chile-online-blogger-tasting/