Spammers Security 1: Your initial contribution must first be 'approved' by the administrator (s) of this twitter blog.
Only then will he visible to you and others. Your next contributions are immediately visible.

Spammers Security 2: Put your 2 or more links in the message, as spammers often do, you'll also post first viewed here.

Refresh: Sometimes it is just as necessary to create your own screen "refresh" (F5 key) to transfer your contribution directly after clicking on Insert / Send can be seen.