http://ping.fm/ has been crawled 707 times going all the way back to March 16, 2008.

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

January 1, 2011

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January 3, 2011

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January 7, 2011

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January 8, 2011

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January 10, 2011

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January 13, 2011

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January 14, 2011

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January 16, 2011

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January 22, 2011

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January 23, 2011

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January 24, 2011

1 snapshot

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January 25, 2011

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January 27, 2011

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February 3, 2011

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February 5, 2011

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February 7, 2011

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February 19, 2011

1 snapshot

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February 21, 2011

1 snapshot

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February 23, 2011

1 snapshot

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February 26, 2011

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March 4, 2011

1 snapshot

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March 5, 2011

2 snapshots

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March 7, 2011

1 snapshot

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March 26, 2011

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April 2, 2011

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April 3, 2011

1 snapshot

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April 7, 2011

1 snapshot

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April 8, 2011

1 snapshot

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April 9, 2011

2 snapshots

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April 10, 2011

1 snapshot

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April 11, 2011

1 snapshot

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April 12, 2011

1 snapshot

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April 13, 2011

1 snapshot

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April 14, 2011

1 snapshot

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April 15, 2011

1 snapshot

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April 16, 2011

1 snapshot

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April 17, 2011

1 snapshot

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April 18, 2011

1 snapshot

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April 19, 2011

1 snapshot

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April 20, 2011

1 snapshot

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April 21, 2011

1 snapshot

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April 22, 2011

1 snapshot

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May

May 1, 2011

1 snapshot

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May 7, 2011

1 snapshot

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May 8, 2011

1 snapshot

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May 12, 2011

1 snapshot

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May 21, 2011

1 snapshot

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Jun
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June 2, 2011

1 snapshot

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June 6, 2011

2 snapshots

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June 28, 2011

1 snapshot

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July 9, 2011

1 snapshot

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July 19, 2011

1 snapshot

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July 20, 2011

2 snapshots

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July 23, 2011

1 snapshot

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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://ping.fm/ was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.