We’re pleased to announce that San Francisco-based DJ duo A Plus D — a.k.a. Adrian and Mysterious D — will be spinning their world famous mashups at Mashable‘s third annual Social Media Day celebration in San Francisco.

Think Lady Gaga meets Bob Marley or Will Smith meets Daft Punk, mixed together under one roof. A Plus D, creators of Bootie, the biggest mashup bootleg party in the world, will rock the party with their musical concoctions and creative song combinations.

Come celebrate with Mashable, A Plus D of Bootie Mashup and Motorola Mobility, our exclusive global sponsor, for our third annual Social Media Day on June 30, 2012 at The Box SF.

The evening will feature networking, music, hors d’oeuvres, drinks and gadgets. Make sure to register online for the event; it’s first come, first served so please arrive promptly.

For updates and to find out what others are up to for Social Media Day, follow our @mashsmday Twitter account and like our Social Media Day Facebook page.

Mashable is pleased that Social Media Day 2012 is presented by Motorola Mobility. Like Mashable, Motorola Mobility’s mission is to connect people around the world through innovative technologies — and this is exactly what Social Media Day celebrates.

We look forward to celebrating Social Media Day with you!

SF Social Media Day Details

All attendees must be 21+ to enter and possess a valid photo ID.

Date: Saturday, June 30, 2012
Time: 5 to 8 p.m.
Location: The Box SF, 1069 Howard Street, San Francisco, CA 94103
Hashtag: #smday

Social Media Day 2012 Is Presented By Motorola Mobility

Motorola Mobility, Inc. (NYSE:MMI) fuses innovative technology with human insights to create experiences that simplify, connect and enrich people’s lives. Our portfolio includes converged mobile devices such as smartphones and tablets; wireless accessories; end-to-end video and data delivery; and management solutions, including set-tops and data-access devices. For more information, visit motorola.com/mobility.