They receive thousands of hits a day from people looking for ideas of days out.They've also found that businesses catering for children have been able to expand due to the demand prompted by the site.
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The four people who were all related were killed on the A64 near Malton as they returned from a wedding in Leeds.
GMB's Ben Shephard is cycling, running and swimming from Whitehaven to Tynemouth to raise money for the Children's Heart Unit Fund (CHUF).
Grandfather Stewart Anderson, 54, died after an incident at Durham's Loveshack nightclub in Durham City