What are the most essential Twitter apps ever created?

OneForty looks like the best site yet to provide a categorized list of Twitter Apps.

While OneForty requires an invitation to join and so is not available to everyone yet, I wanted to provide what I think is one of it's most valuable features to the general user: a "best of" list of apps organized by category they call "essentials."

What do you think? Are these the  most essential Twitter apps out there? Here's their list as of late September, 2009:

Desktop

• TweetDeck

• Tweetie for Mac

• Twitterrific

• Seesmic Desktop

• DestroyTwitter

• Twhirl

Mobile

• Tweetie

• SimplyTweet

• twidroid

• UberTwitter

• TwitterFon

• Gravity

Business

• CoTweet

• HootSuite

• TweetLater

• PeopleBrowsr

• Twitter

• EasyTweets

Networking

• Mr. Tweet

• WeFollow

• Who

• Friend

• Twitter

• UnTweeps

Entertainment

• Overheard.it

• Twittervision

• Twistori

• Twitter

• CelebritiesThatTwitter

• Post Like A Pirate

Monitoring

• Objective

• TweetBeep

• PeopleBrowsr

• OneRiot

• Collecta

• Radian6

Media Sharing

• TwitPic

• Qik

• Blip.fm

• twt.fm

• Screenr

• yfrog

Link Tools

• Bit.ly

• Tweetmeme

• Eventbox

• twitterfeed

• Backtweets

• TwitThis

Analytics

• TweetStats

• Twitter

• Twitalyzer

• TweetVolume

• Tweetrush

• Follow Cost

Random

• Peekr

• Post Like A Pirate

• Flip

• Portwiture

• pici.me

• Oh My Science

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How Twitter messages work when you use @

First, imagine a fictional family where everyone follows each other on Twitter: @Mom, @Dad, @Brother and @Sister.
1. The basics

Rule #1: A person must follow you before you can DM them. If @Mom and @Dad (fictional example names) want to write completely privately so no one will see what they write but each other, they have to DM each other.

Rule #2: Anytime you put an @someone anywhere in a tweet, it will be sent to that @someone, regardless of whether they follow you or not.


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Make a Photoshop Web Design Template That is Designer and Developer Friendly

There is a great article explaining how to create the layers for a photoshop web design template but they didn't include a sample PSD file to start from.

Here is a Web Design Wireframe Template created in Photoshop CS2 to help you get around the procrastination of creating one for yourself :). Its is based on the layers covered in the article.

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Big list of free photoshop alternatives

Here's a big list of  free photoshop alternatives. Many are online and you can start instantly—no download, no installation. Why should you check out more than one of these if you find one you like? Many have cool and useful features that others don't have, so it's worth doing a little research.

Photoshop Express Online	flauntR	Dumpr
Sumopaint	Pic Resize	Lunapic
Picnik	Pixenate	Aviary
Splashup	FotoFlexer	CinePaint
Artweaver	Phixr	Pixen
GIMP	Kizoa	Krita
Paint.NET	Pixlr	Pixen
Seashore	Picmagick	PhotoFiltre
Photoscape	Pictureful	PaintStar
Inkscape	picture2life	Pixia
PhotoPlus SE	Snipshot	Active Pixels
Phoenix	Flauntr	ChocoFlop
	FaceFilter	Photo Pos Lite
Snipshot	Webpictool

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