OmniWeb

from the developer's site: OmniWeb is built specifically - and exclusively - for Mac OS X. For instance, OmniWeb uses Mac OS X's graphics engine to produce amazingly sharp web pages that display smooth text just as beautifully as a printed page. OmniWeb also takes full advantage of multiple processors for extra speed, and truly reflects the Aqua user interface with drawers, sheets, customizable toolbars and more.

OmniWeb has a rich feature set. If you know of a good hint, add it here! (this is a hints page, not necessarily an advertisement page)

1. Separate window form editing: Click the square in the upper right corner of multi line form fields to open it in a separate window. This helps when you wish to add lots of text to an area which is very small and you want to see all of it at once.
2. View Links: By clicking on this button in the toolbar, one can quickly view all the links contained in the page.
3. Ad blocking: OmniWeb uses a powerful pattern match ad blocking feature to stop images from loading from servers matching the pattern. It is also possible to block images that don't originate from the current server you are browsing and to block images which are the common advertisement size.
4. Shortcuts: allows one to type a word or partial address and end up in the correct place. See below for examples of shortcuts

Shortcuts

To use the address bar as a google search bar, copy this line into the shortcuts panel of the preferences:

 Shortcut         Destination URL
 google@        http://www.google.com/search?q=%@

Now type this in the address bar: google omniweb and you will be taken to a page of google hits for omniweb.

Other useful shortcuts:

 Shortcut         Destination URL
 google@       http://www.google.com/search?q=%@
 thesaurus@    http://thesaurus.reference.com/search?q=%@
 dictionary@   http://dictionary.reference.com/search?q=%@
 hints@        http://www.macosxhints.com/search.php?query=%@&type=stories&mode=search&keyType=all
 vt@           http://www.versiontracker.com/mp/new-search.m?productDB=mac&mode=Quick&OS-Filter=MacOSX&search=%@&x=0&y=0