For now, existing Delicious members can use their current login process. In the future, those accounts will be merged with Yahoo! ID accounts.
Delicious also has added Twitter OAuth support. Go to your Delicious settings page and authorize Twitter. This will prevent constant sign-ins in order to Tweet a Delicious bookmark.
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.