I'm noticing an upward trend in daily linkblog postings (probably aided and abetted by social bookmark services with decent APIs) in the feeds I read, and I'm really enjoying it. There's a high level of serendipity in an easy to read form factor.
On a related note, while aggregators bundle things together nicely, they also strip out the overwhelmingly horrific visual design plaguing websites today. Honestly, Angelfire has taken over the web.
As an experiment, take your top 5 favorite weblogs. Follow permalinks to a few archive posts and marvel at the amount of screen real estate occupied by non-content. As a mildly objective measure, navigate to the bottom of the archive page using the spacebar counting the number of chunks that contain absolutely nothing of the archived post.
End of rant, and yes I know where my petard and your hoist are.