Scoble:

Out of, say, 1,000 people who are on the Internet, only a small percentage read a lot of feeds. Let’s say it’s 10%. That means only 100 out of any 1,000 people will read feeds and of those 100 people only a small fraction will bother with [partial text] feeds.

The thing that partial texters are forgetting is that the other 900 people will find out about you from an influencer. Someone who will tell them. So, your traffic growth will be far slower if you only offer partial text feeds. Many of my friends who are journalists or bloggers just won’t deal with partial text feeds anymore.

That’s a very good point: with full-text feeds, you lose a very small portion of your advertising revenue (even smaller considering RSS users are more tech-savvy and less likely to click ads); with partial feeds, you risk losing the most important category of blog readers.