http://urbandictionary.com has been crawled 2,790 times going all the way back to May 25, 2002.

A crawl can be a duplicate of the last one. It happens about 25% of the time across 420,000,000 websites. FAQ
Jan
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January 4, 2013

1 snapshot

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January 5, 2013

1 snapshot

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January 11, 2013

1 snapshot

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January 12, 2013

1 snapshot

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January 13, 2013

1 snapshot

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January 14, 2013

2 snapshots

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January 15, 2013

2 snapshots

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January 21, 2013

1 snapshot

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January 22, 2013

1 snapshot

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January 30, 2013

1 snapshot

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Feb
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February 3, 2013

1 snapshot

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February 6, 2013

1 snapshot

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February 10, 2013

1 snapshot

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February 12, 2013

1 snapshot

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February 14, 2013

1 snapshot

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February 15, 2013

1 snapshot

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February 16, 2013

2 snapshots

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February 17, 2013

1 snapshot

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February 18, 2013

1 snapshot

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February 25, 2013

1 snapshot

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February 26, 2013

3 snapshots

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Mar
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March 2, 2013

1 snapshot

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March 5, 2013

1 snapshot

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March 9, 2013

1 snapshot

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March 11, 2013

2 snapshots

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March 13, 2013

1 snapshot

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March 14, 2013

2 snapshots

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March 15, 2013

1 snapshot

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March 18, 2013

1 snapshot

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March 20, 2013

2 snapshots

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March 25, 2013

2 snapshots

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March 26, 2013

1 snapshot

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Apr
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April 2, 2013

1 snapshot

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April 3, 2013

1 snapshot

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April 5, 2013

1 snapshot

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April 11, 2013

1 snapshot

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April 14, 2013

1 snapshot

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April 15, 2013

1 snapshot

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April 16, 2013

1 snapshot

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April 19, 2013

1 snapshot

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April 20, 2013

1 snapshot

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April 22, 2013

1 snapshot

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April 23, 2013

2 snapshots

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April 24, 2013

1 snapshot

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April 25, 2013

1 snapshot

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April 26, 2013

1 snapshot

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April 28, 2013

1 snapshot

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April 29, 2013

1 snapshot

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April 30, 2013

3 snapshots

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May

May 1, 2013

1 snapshot

1

May 2, 2013

1 snapshot

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May 5, 2013

1 snapshot

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May 6, 2013

1 snapshot

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May 8, 2013

1 snapshot

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May 9, 2013

2 snapshots

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May 10, 2013

1 snapshot

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May 11, 2013

1 snapshot

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May 14, 2013

1 snapshot

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May 17, 2013

2 snapshots

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May 22, 2013

1 snapshot

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Jun
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Jul
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Aug
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Sep
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Oct
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Nov
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Dec
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Note

This calendar view maps the number of times http://urbandictionary.com was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.