Here are the list of very useful Chrome Extensions. nuff said
1st: Checker Plus Gmail
Displays new emails and the sender's contact photo, get desktop notifications or even listen, read or delete them without opening a new tab for Gmail.
Extremely Useful for Email Alerts
All my Emails-- Now don't stalk me :)
A have a dedicated gmail for my manga update notification
2nd: Down For Everyone Or Just Me
Check if a website is actually down! Right at your fingertips.
3rd: RSS Feed Reader
Get a simple overview of your RSS and Atom feeds in the toolbar
4th: Last Pass
LastPass is a free password manager and form filler. LastPass is also available for Firefox, Internet Explorer, Opera and Safari.
5th: FVD Video Downloader
Easy Video Downloader. Download Video from Any Page. Download Mp3 or Flash Games. Download Music. HD Download. Download Helper. The most important feature of this extension is. IT CAN DOWNLOAD ANY FLASH/.SWF file.
6th: i2Symbol - Emoticons, Smileys, Symbol
Free Emoticons, Smileys, and Symbols for Social Networks (i.e., Facebook and Twitter). (Most Important Feature: The Japanese Emoticons )
Ly: a simple link shortener
A simple link shortener based on bit.ly. Get the ink out of your linky and make it Ly.
Feature: Convert any url links to a shorten url, ANY. You can either click the extension bar or right click a specified url and convert it to shortened Ly url
The quickest way to take notes in Chrome, as quick and slick as the best desktop note-app.
Right Click>New Note>Pop Up Notebook :)
The Whole NoteBook
This extension replaces the default history viewer.
Chrome is an excellent browser, but viewing your history could be a lot better. That's where Better History comes in. See below!
Tampermonkey is the most popular userscript manager for Google Chrome. (Most Important Feature: If you want to read all the manga pages at once on popular manga reading website like Batoto (get this extension and install this script: http://userscripts.org/scripts/show/139639 )
Special Extension: Adblock
Block any pesky ads in the internet (Mostly)