Montblanc is involved with the Signature For Good Edition (with blue sapphire and gold-coated UNICEF leaf in the cap, in a limited and a regular variant) for UNICEF and uses a Facebook widget campaign in which users can enter their signature. Accompanying this, there is a Twitter account (twitter.com/mysignature) as well as an official Facebook channel (facebook.com/montblanc), on which exclusive product announcements and campaigns are also announced. In addition, customers are occasionally invited to auction events (e.g. LE 1/1 in Los Angeles with pens of money gold and brilliant rings, starting prices 18,000 to 20,000 USD); invitation criteria are not public but are presumably based on purchase history.