Trig.com is currently under beta
Some people write poetry in theirs.
Some musicians write tour diaries in theirs.
Some people rant about all kinds of stuff in theirs.
Some musicians discuss how their studio time is going in theirs.
What will you write in yours?
Tags are a smart way to make everything you do searchable for you, your friends, and other users here on trig. For example, create a blog and post it with the tag "party". Later, when you upload images, videos, and other forms of documentation of your party, you can tag them with "party" as well. That way, you and everyone else will find your blog, images and other stuff related to the tag "party". You can also have a look at the tag cloud to see your main themes summed up in a nice, graphical way.
You might not be near a computer sometimes, but adding content to your Trig blog is as easy as typing a text message on your phone. All you have to do is head into Settings and generate your unique email address, which you can then save in your phone. Anything you send as an MMS to that address will land in your Blog, with the subject and message making up the blog title and blog body.