Fun With Twitter and Visual.ly
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