Social media is an important function of contemporary business. It's up to you to determine which social media services best suit your business. Aside from social media there are other profession-specific services that may suit your needs. The lot of what's at your disposal may include, but is not limited to:

Bizjournals.com
BNI
Chamber of Commerce (local/international)
Citysearch
Denver Business Journal
Facebook
Foursquare
Google My Business
Hotfrog
Houzz
Instagram
LinkedIn
Nextdoor
Pinterest
Snapchat
Twitter
Vimeo
Yelp
YouTube
...