Happy St. Patrick's Day everyone. In typical Search Engine Roundtable, here are a collection of logos from Google, Yahoo, Ask.com, DogPile and various SEM communities celebrating St. Patrick's Day on the web.

Let's start with Google:

Yahoo has a Flash logo, here it is:

Ask.com goes with a theme:

DogPile is always cute:

Cre8asite Forums has a special logo:

PPC Hereo's Blog has a theme.

Bruce Clay Blog has a logo:

And we have a theme for the special day:

I am sure I missed some special logos and I apologize in advance. But let's take a historical look at past St. Patrick's Day logos:

• 2007 St. Patrick's Day Logos
• 2006 St. Patrick's Day Logos
• 2005 St. Patrick's Day Logos
• 2004 St. Patrick's Day Logos

Forum discussion at Search Engine Roundtable Forums and Cr8asite Forums.