What are some alternatives?
When comparing Exposure and Twitter, you can also consider the following products
Storehouse - Create, share, and discover beautiful stories.
Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
Stampsy - A single place to share, curate and discover visual content
Instagram - Instagram is a mobile, desktop, and Internet-based photo-sharing application and service that allows users to share pictures and videos either publicly, or privately to pre-approved followers.
SecureIT - A simple way to cybersecure your servers and services
Tumblr - A feature rich and free blog hosting platform offering professional and fully customizable templates, bookmarklets, photos, mobile apps, and social network integration.