The number two reason for doing it now is this.

Also – you should really read their blog.

Second Brain is a life stream service with a twist. I know, I know – life stream services are a dime a dozen, and if you asked me if it were a good idea to start developing a new one, I’d probably say no, BUT, Second Brain has two clear advantages, compared to other services like it:

1. It syncs your content!
   Why is this a good thing? well, obviously, it’s good to know that changes made to my back log of content are also implemented in Second Brain.
2. You can create collections
   This is where it gets really hot, if you ask me. You can choose across your different types of content and create collections to share with anyone and everyone (or a few chosen ones, if that’s your pleasure). One example might be a list of potential baby names (Google doc), pictures of said baby (Flickr), videos (YouTube) and links to statistics on popular names (del.icio.us) – all neatly put together in a collection. Now, this is just one example, but the potential is huge. Think in terms of putting together study material, sources, brain storms etc.

Now there are still a bunch of stuff that could be done to improve Second Brain, but off the top of my head there are only a few things I’d focus on:

• Add more supported services – all the time! (personally I’m really hoping for Vimeo support)
• Focus more on collections – it’s what sets Second Brain apart from the rest. So leave status updates and the rest of that stuff to all the others (hell, even LinkedIn asks me what I’m doing now, and as of recently I nearly only use hellotxt to update statuses across the board of services) and emphasize the coolness of the user as the curator for his own stuff.

But keep an eye out for Second Brain – it’s bound to catch on!

You can read more about Second Brain on their blog with the very appropriate name Second Thoughts