Everyone should have a Twitter account and you can use Twitter to
tweet public update about yourself. By using Twitter you can be ask
friends and fans to follow you in their Twitter accounts and you can
publish your tweet update without the need to expose all your personal
data. Twitter much more safer comparing to Facebook or Google Plus.
You just need to careful with what you share to public.
An example of public tweets about technology related to Open Source
Software and Linux, is by reading LinuxMalaysia Twitter by clicking
the Twitter link below