Since a long time ago (a decade!?); probably since I knew the internet, specially IM, I always liked status massages. It was my way to push away what's on my chest. I didn't really say everything on my mind straight out. Usually I'd say it in a cunning way so that only those who'd (care to) take the time to think about its meaning would get it. That's people who really care.
Yet, not all my friends are on my IM (Google talk, MSN, etc.. ) & not all the people on my IM are really my friends. Also, IM is "instant" :D.. So, probably, you should reply "instantly" when you're prompted, "if" you're around.. That's why I'm usually "appearing" idle/away, all the time on almost every IM client I've ever used.
Later, I was introduced to blogging (running my own site wasn't really my cup of coffee.. It was a way-too high maintenance for me).. Again blogging was (& still is) more of sharing my thoughts; Speaking/Writing it "loud".. But usually I write on my blog with the mindset of "It should be a real big thing to write about.. You should have much to say to write.. It should be like an article or something".. Actually my series of posts under the tag "Quote of the moment" is my compromise between IM & blogging..
The same is for the song lyrics, that I sometimes post on my blog.. It's just away of sharing a piece of my mind.. Usually it's related to my current mode or -on some few times- just something I read about & like to share with my friends (most of these are on my Google Reader shared items now :D).. Actually sometimes I share stuff just to remind myself (& other people implicitly) of it later.. Specially technical stuff..
Now, I'm also using twitter.. It really more like IM status message.. But this time it's not instant.. So you can reply later.. Or not reply at all.. You can allow as much people as you want to follow your status message without being annoyed with lots of in coming messages that you have to reply to..
Another thing I like about twittering that it's starting to be like a public chat room with a lot of my friends (& people who has interests similar to mine) now :D.. Actually it allow people to know what's on my mind.. Even people at work..
Generally, I find all of them a healthy way to get relieved.. Some sort of a psychic therapy :D