[Edit: Replaced tip #8 with another one. Email me if you're interested in former tip #8, I didn't like it too much as it could inspire spammers.]

Friendfeed is neat but it also seems to be very very geeky. Even with all the buzz and stuff, I am unsure it is really going to work in the long run.

To add to the tips:

A FriendFeed API
http://friendfeed.corank.com/api.html

A people count bookmarklet:
http://blogoscoped.com/files/friendfeed-count.html

I took a look on this site, now i can say that the idea may succeed, but the site looks like one of Google services. i imagine that when they left Google their hands were not empty. Such things should be copyrighted. isn't it?

Bilal, is Google a chicken laying eggs in the form of Kevin Fox, Paul Buchheit and others – or are Kevin Fox, Paul Buchheit and others chicken who left the company and are naturally continuing to lay eggs?

You can't trademark simplicity.

Phillipp:
I think they was not laying the same eggs before joining Google. It is evident they profited from their experience therein but they must not reproduce the same codes they worked on there. if you create one thing you also can do it two times so they must create a different style for their new site.

Ionut Alex. Chitu:
It is not simplicity, it is Google style. links, colors, graphics ... of course i am ok such thing must not be registered but i think some ethics must be respected. this is similar to what did bill gates with Steve jobs.
  

> this is similar to what did bill gates with Steve jobs.

... which was similar to what Steve Jobs did to the guys over at Xerox PARC ...

Not exactly but yes it is. what i meant is that they could make something completely new. Indeed, I like this style and i will be happy if all the web looks like that ;)

Very cool: Friendfeed made their code revisions change log public, so you can get an insight into their updates on a daily basis:

http://changelog.friendfeed.com

http://blog.friendfeed.com/2008/02/friendfeed-changelog-see-what-code-we.html

Just a comment that friendfeed is similar to recently released secondbrain.com

Trying it for the first time today, seems a lot like Plaxo Pulse to me

Another tip, also posted on FriendFeed: in replacement of line breaks, which currently aren't workin in comments, you can type ¶. (The character ↵ could communicate something similar but is a bit hard to make out in smaller font sizes.)

It sounds to me like what you're suggesting is using FriendFeed as an RSS reader that moves in real-time. Personally, I can hardly get to all the feeds in my reader (Bloglines), so it seems impossible to follow them in real-time.

Otherwise, great tips! Still playing with it myself, and these will be helpful in deciding whether or not to stick with it.

But that's the nice thing about FriendFeed: you won't end up with "unread" messages, so keeping up seems easier.