OK. I've changed my decision. I use Friendfeed instead of Twitterfeed for the reason that Twitterfeed is too slow to daily use.

I've decided to use Twitterfeed instead of Frinedfeed to send links to my blogs to Twitter. Friendfeed is fast and reliable, but Twitterfeed is functional and isn't show-off.

I found reason why my Poserous got more access was many searcher seeking about iPhone 3GS. On the other hand, visitors to my Tumblr come from only external links since Google haven't index it yet.

I've sent an invitation request of Titema which is expected to bring added value to my micro-blogging experience.

Although they said Twitgoo is a quick, easy, reliable, and safe way to share images for Twitter, I don't think so for the reason that we can't eliminate existing picture on it even though we have deleted the related post on Twitter. I use Flickr instead because I wrote useful bookmarklet for posting a URL to Twitter.