For the marketing and web tech industries, the most popular social media websites used for recruiting are LinkedIn, Twitter, Github, and Google+. Other strong contenders include XING, Facebook, BranchOut, Stack Overflow, and Behance. Often social hiring or recruitment is an auxiliary method to Linkedin jobs, Craigslist, Dice.com, and Indeed.
Twitter and Google+ remain strong contenders because of their threading and filtering capabilities with hashtags. Twitter hashtags are a fantastic method of driving to job listings and job hunters. See: Twitter hashtags for tech jobs
Hiring hashtags for Twitter include:
#hiring
#jobs
#HR
#techjobs
Hiring hashtags for Google+ include:
#hiring
#hiringnow
#JobSearch
#Resume
#JobOpening
Facebook can be a strong contender for job searches, as it makes for an unbeatable peer-to-peer network. Friends can post, share and search for jobs within their friend networks and with friends-of-friends.
Browsing design and development portfolios can also certainly be a great way to find talent. Additionally, GitHub is a powerful tool to understand the work of web developers and programmers--see their code, projects, frequency, and collaboration capabilities.