If you happen to be in the UK and near London on January 31st then this might just interest you. The Windows Phone User Group (an independent group dedicated to helping developers interested in the Windows Phone platform) are having another monthly meeting just next to Liverpool Street station.
This month they have Alan Mendelvich of AdDuplex providing a guide to monetizing apps on the Windows Phone platform, as well as demonstrations, socializing and beer. This all sounds excellent to me so I've decided to join this month's meeting as well, if you want to come along an say hi, you can register for free at the source link.
Source: Windows Phone User Group