Happy Halloween! Here are the logos from the search community including Google, Yahoo, Bing, AOL, Ask, Dogpile, and so many more. For the past years logos, see 2008, 2007, 2006, 2005 and 2004 logos.

Here are 2009's Halloween logos:

Google has four (click, click, click and click):

Yahoo (Flash):

AOL (Flash):

YouTube:

Bing:

Ask.com:

Dogpile:

BruceClay's design:

JohnMu of Google dressed up his forum logo:

Search Engine Roundtable (us):

Google also added fun bits to their robots.txt file:

User-agent: Kids
Disallow: /tricks
Allow: /treats

Matt Cutts dressed up and Bing went visual.

Forum discussion at Search Engine Roundtable Forums and Google Blogoscoped Forums.

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