Two threads seems one too many for this, but again, aren't you inviting people to use your content by providing a feed? Isn't that what all those big sites do, provide a feed and give credit?
If you don't want others to use your content, shouldn't you not provide them a feed?
Liveactionpoker has been around seven years or so and has always acted responsibly towards other people and sites. They include the ability to remove your
blog from their site. They do seem to now have it part of their site promotion to use
poker blog feeds, but again, isn't that the point? (And providing such a feed seems like a crazy thing, unless you like having duplicate content like this for some reason.)
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"Content distributors
syndicate a web feed, thereby allowing users to
subscribe to it. Making a collection of web feeds accessible in one spot is known as
aggregation..."
"Feeds are a way for websites large and small to distribute their content well beyond just visitors using browsers. Feeds permit
subscription to regular updates, delivered automatically via a web portal..."
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Liveactionpoker is aggregating web feeds they have subscribed to, and are displaying them on their portal. From my reading anyway, this seems to be exactly how things are supposed to work.