I finally took the plunge a few months ago and signed up on Twitter. It’s as simple as
Q What are you doing?
A 140 characters to answer
Update
That’s it in a nutshell however it has some really cool features which I will share at length here.
This is what the home page looks like.

What are you saying?
This is where you say what you have to say about whatever you want to say. The catch is that you have only 140 characters to say it in. Click update when you are done.
It could be some thing serious like a product launch or just as simple as where you are having you next cup of java. If you share a link, it does shorten the link, tinyurl, thus maximizing on the 140 characters.
Like most web 2.0 or social networking sites it’s evolved from a purely social to business related as well. I find it very useful for following the latest product launches, news, ideas, information and whereabouts of people.
Someone mentioned that she turns twitter on her mobile when her spouse travels on business. He is very good about posting updates like boarding plane, plane landed, renting car etc. It puts her mind at ease to know that he is ok.
If you like short and simple then twitter is for you. It’s not for lengthy posts with comments.
Let’s explore the top navigation bar.
Profile
This shows every tweet you have ever made.

Find People
You have the option to invite people from other networks. Once logged into your email it will go through the list and see who from your address book are already on twitter.

Select those that you’d like to start following. Continue.
For those that are not there you can select people that you want to invite and click on send invites.
The other option is to invite via email. Twitter will send an automated email inviting them to join, a standard in the social networking world.
At first I had a hard time with this feature as most people I knew were not on Twitter nor had the desire to be on it. So using my address book from email did not work well. As I started networking and hanging out in the Social Media spaces I found a lot more people to follow.
Settings
here are the usual Account and Password settings. Fill out whatever information you want displayed. If you are a very private person you do have the option of protecting your updates. Note you will not be on the public timeline if you select this option and only people following your updates will see them.
Devices
Everything is mobile these days.

So do add this feature it will go a long way in sending those instant updates.
Notices
This is a great feature. “Nudge me if I haven’t updated in 24 hrs” a txt to you phone.
@ Replies - this is very important as this is the filter for the volume of information you want to receive.
The usual email me for updates and newsletter gotchya.
Picture
Great to personalize your profile. Note size only 700k.
Design
This is twitters attempt at customization. This is definitely an area that needs improvement. It’s best to select a current theme as attempts to customize fail miserably.
Now the Right navigation bar.
You will see you photo, name. Below this you will see ….

Following
Tells how many people you are following, in this case I am following 105 people. Clicking on this link will give you the listing of all of these individuals. You do have the option of removing them or inviting more people.

Followers
Shows how many people are following me. In this case 35. Clicking on this link gives a full listing.
Updates
This indicates how many updates are there, 39. I guess I need to start tweeting more : )
@Replies
This shows all the tweets that have been in response to my tweets
Direct messages
This is where you can send a direct message to the people following you. It has the usual Inbox and sent folders
Favourites
Star your vavourite twitter updates and they get saved here. A great feature if you have you find a link useful for example.
Everyone
Well it’s what it is, everyone who is tweeting on twitter!!!!
Following

This shows a summary of the people you are following with the option of showing all.
Device Updates
This is where you set up you mobile device, got to add this to my to do list.
Well there you have it, Twitter 101. So if you are not on twitter go ahead and try it out. I will share my thoughts on the good, bad and ugly of twitter in the new year.