Financial Times (default)
BBC World News (default)
JK on the Run
Boing Boing
Gizmodo
iPod News Network
Macintosh News Network
Metafilter
CNET news.com
Palm Infocenter
PIC msg boards
Puppetvision blog
Machin-X blog
Wired News
Macintouch
Ars Technica
Scripting News
Internet Tablet Talk
Nokia 770 News
Nokia 770
770 Fan
Slashdot
Sorry I didn't provide the URLs. I figure most are well-known. Besides, you can Google any of these, then click on the RSS icon to get the URL.
Just fyi, no feedburner.com hosted rss feeds will work under Maemo, neither before nor after the PR 1.2 upgrade, so you can scratch any feeds using them, which is like half the internet.