More talk about the full vs. partial feed thing, with some evidence from FeedBurner tossed in:

As people subscribe to feeds, they subscribe to more feeds. And that means they’re consuming more content, which means that each click out of the feed reader is taking the reader away from more content. In other words, feed reading is consumption-oriented, not transactionally focused. We’ve seen no evidence that excerpts on their own drive higher clickthroughs.

Which is why the author - like me - recommends full feeds. The only counter he lists is weak:

The main issue I see with publishing a full feed is the risk of your content being used by scraper sites. For those of you unfamiliar with scraper sites their sole purpose is to generate income through advertising by republishing content stolen from RSS feeds.

Scraping HTML is really not that difficult - whether you want to accept it or not, you crossed that particular bridge as soon as you offered a website...