TechCrunch (uhh, i mean Frank Gruber) examined nine web-based feed readers (Attensa Online, Bloglines, FeedLounge, Google Reader, Gritwire, News Alloy, NewsGator Online, Pluck Web Edition, Rojo).
Not much of a shock here, Google Reader and FeedLounge are the fastest in performace. Bloglines and Rojo are the best choice for a feature rich application. Except none seem to approach the speed and agility of the desktop based readers like NetNewsWire and FeedDemon (surprise;).
Nice chart though:

Attensa today announced the availability of Attensa Online, a free Web-based RSS application. Attensa Online takes advantage of Attensa’s unique AttentionStream™ article level synchronization that connects desktop, web and mobile RSS reader clients so articles read, organized and deleted are kept up to date no matter where or how they are accessed. Attensa today also announced Attensa for Outlook 1.0 (20 Dollar a year) and the two can be used together to easily manage RSS feeds and articles from any computer with an Internet connection.
I’m gonna try it and I’m very curious about AttentionStream, will let you know how it …read more

Craig Barnes, President and Founder of Attensa, writes on his blog about Attensa and believes attention is the holy grail to solving the emerging problem of information overload. I could not agree more. And in his opinion, the overload problem will be obvious to the masses once Outlook 12 (and IE7) introduce RSS capabilities to the rank and file “knowledge worker.” Outlook 12 will help cause information overload, not help mitigate it. But, that’s where Attensa comes in…
Intelligent utilization of Attention data is paramount. Counting links or assigning static weights to articles will not cut it. By the way, attention …read more

Attensa, the software company that got $9 million capital, has released Attensa for Outlook 1.0 Beta. With this plugin it’s possible to get results from all major blogs-searchengines right into your Outlook folder! It currently works with Blog Digger, Daypop, Del.icio.us, Feedster, flickr, Moreover, MSN search, Technorati, Wired News, Yahoo! News, Plazoo, SeekItAll, Google News, Google Blogs, Wikipedia, Feed24, IceRocket, Digg, and Yahoo!
You can request an invite to the Attensa Online beta here.

This Monday it was announced that a $9-million investment was made in Attensa, a software company developing a web syndication or RSS network. Attensa spokesperson Scott Niesen said RSS Investors ponied up $5 million, with the remainder coming from SmartForest Ventures and other smaller early investors. Attensa and RSS Investors said the technology can help companies use RSS as a tool for their employees.
Attensa has been offering a free Outlook version of its RSS Reader since last February, which the company says 100,000 people have downloaded. Attensa will offer an updated Outlook version for $19.99 per year as well as …read more