Product Description:
Tags allows you to manage all your files so that you can 
easily find the files that you need, when you need them.
Tag everything on your Mac: documents, emails, images 
and all other files. Quickly find files irrespective of where 
you saved them. You can bring up the Tag's UI with a 
simple keystroke in most applications, so that you can 
Tag files and search for Tags, wherever you are.

Tags are like keywords for files. Using tags allows you to 
group files which have something in common. You can 
apply many different Tags to a single file as well as apply 
the same Tag to multiple files. This allows you to 
associate files to one another in a way far superior to a 
rigid file / folder structure.

Features:

Tag Files directly in all supported applications
Full Spotlight Integration
Supports in application search
Create smart folders and mailboxes
Applescript support

Supported Applications: Tags works natively with 
basically all applications that properly support 
applescript.
Finder
Mail
Address Book
iPhoto
Safari
Microsoft Office (Word, Excel etc.)
Adobe Photoshop
Xcode
Rapidweaver
Omnioutliner
Pages
Keynote
Quicktime

Of course, even if the App is not supported, you can still 
always tag the resulting file in the Finder!

What's New?
General:
--> Search performance improvement
--> New search result category for matching tags
--> Renaming of tags within Tag Browser
--> Support for tagging within Mailplane (GMail Client)
--> Fix: Page Up/Down does not switch page but jump 
to begin/end in search results
--> Fix: Whitespace charcter not trimmed on input
--> Fix: Multiple selection lost in Tag Browser when 
context menu comes up
Known Issues:
--> Problems with tags that have an apostrophe in their 
name
--> Double apostrophe is not handled correct in search

Installation:
--> Open folder & mount dmg
--> Drag app to your applications folder
--> Use serial from .txt file to register program
--> Done!

ENJOY!!
--> IsolatedSoul5591