Perhaps some keep a journal so they can remember what they have done in the past. Perhaps many nowadays use a blog for that purpose too. Twitter, which appeared in my previous post, a social networking site based mainly on activity streams could now be the synonym for “what am/was/are I/you doing”.
Twitter’s API allows many implementation of getting twitter service, eg. this twitter balloon.
A similar feature exist in Facebook, and is perhaps the more popular among many is to announce their status or what they are doing. Recently I read that the first thing one would do after a relationship break off is to change their status on Facebook. Perhaps you are not that extreme, but might still be guilty of complaining, or showing off via your online messaging nick, status or personal message.
Talking about streams, no one can deny the power of RSS feeds, whether its a blog, twitter, or facebook, they all have them. And my preferred method for reading blogs, and my favorites sites.
And lastly, even Google must have realise the potential of these lifestreaming activities and acquired Twitter’s competitor Jaiku. Even though there are already a couple of Google Services eg. Maps/Earth + Twitter Mashups, it would be interesting to see what Google has in store for all of us (perhaps integrate gcalendars too).