rotfl In chat rooms ROTFL means Rolling On The Floor Laughing!
Readmail This is really different! You can check your email from almost any account while online. Say for example if I'm on AOL, and I want to check my earthlink email... I would use this! Unfortunately, I wasn't able to access my AOL email. But if you have any other service than AOL, It's great!
Talk on the internet for free - This is a program that you can download for free. If you have a microphone and speakers (Radio Shack - less than $20.00 most likely) you and anyone else with the same program can actually SPEAK to each other. The file is about 260KB to download and my connection of 28.8 took less than 2 minutes. Find out all about it here!