A discussion is raging on Twitter tonight, comparing the micro-blogging site where users can post messages in 140 characters to social networking site Facebook. Here are some of the observations from Twitter users in the Middle East, who lend their voices to a topic which is trending on Twitter worldwide.

From Cairo, Amna Amer tweets:

@Amnamamer: #TwitterVsFB u choose who to follow cause ure convinced, fb u have to accept every friend request cause otherwise u would b blamed!

Egyptian Wael Ghonim, who rose to fame after being arrested in the early days of the Egyptian revolution, notes:

#TwitterVsFB a worldwide trending topic tonight

@Ghonim: Twitter one-way relationship makes a lot of people trying to be more unique & less main stream to acquire followers #TwitterVsFB

While Egyptian architect Basem Salem, who lives in Doha, Qatar, asks:

And Ahmed Awadalla, also an Egyptian, from Cairo, notes:

@3awadalla: Around 8.5 million fb users in #egypt but only 130000 twitter users. #TwitterVsFB

Meanwhile, Egyptian Mohamed Diab reminds us:

From Doha, Qatar, Sylvia Ayman has made up her mind:

She further adds:

@S_for_Slyvia: #TwitterVsFB Twitter: less security, more decent people .. Facebook: ultimate privacy and scum bags are everywhere!

Back in Egypt, Egyptian Shaimaa Khalaf concludes:

@shaymaakhalaf: Facebook is where you lie to your friends. Twitter is where you're honest with strangers.#TwitterVsFB

And Amira Salah, also an Egyptian, notes:

@amira_salah: #TwitterVsFB Facebook makes u hate people close to u, twitter makes u love people u never knew

For more reactions, please check out the hashtag #TwitterVsFB