Those who grew up in the Netherlands and developed an appetite for partying probably know the phenomenon: Partyflock. The online databases of gigs and raves in electronic dance music was launched in 2001 and has been run by volunteers ever since. It offers an exhaustive agenda in which you can select a time and place to find the right party.
Additionally Partyflock posts photos, writes reviews, functions as a forum, and contains handy links. Although the site is based in and focused on the Netherlands, it also includes parties and events abroad.
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[ Don't have plans for XMas // NYE yet? Check Partyflock for their holiday lists! ]