Acrobat.com is the new entry point to Adobe's suite of online services. Available now as a public beta, from here you can utilize the Adobe web office tools all from one cohesive and integrated suite that allows for anywhere access and online collaboration. At Acrobat.com, you have access to the following web office tools: Buzzword, ConnectNow, Share, My Files, and Create PDF.
Buzzword (our coverage) is the Adobe version of the word processor. Like all of Adobe's online tools, Buzzword is sleek and elegant. Instead of simply trying to port desktop software to the web, Adobe's vision seems to be more focused on creating something fresh, built specifically for the web with online collaboration in mind. In lieu of AJAX, Adobe's tools utilize Flash/Flex to provide the beautiful UI and a true WYSIWYG experience. Whether your Buzzword document is on a large screen or small screen or on a printed page, what you see on the screen - fonts, letter spacing, colors, and graphics - are all reproduced perfectly.
Buzzword also stands out for the way they've implemented online collaboration - instead of names in sidebar like in Google Docs for example, the complete list of a file's collaborators are always displayed prominently at the bottom of a document along with their current status - reading, editing, etc. - as well as the date and time of the last version they viewed.
Collaborators can be given roles like editor, reviewer, co-author, and reader and depending on those access levels, they can either write, edit, or comment in the file. The comments are highly visible and color-coded by user which makes it easy to see what's being said and by who.
The different versions of a document are also easily accessible from the bottom of the screen. You can slide your mouse along a timeline whose dots which indicate the different versions, gliding smoothly from one version to the next.
Source : http://www.readwriteweb.com/archives/adobe_launches_online_office_suite.php