Is it just us, or have you had more than your fair share of Twitter marketing/pr stories recently?

Pizza Hut got a ton of press for hiring a "Twittern" (Twitter Intern, get it?) to monitor the brand this summer.

San Francisco Mayor Gavin Newsom announces his run for Governor of the state via Twitter.

Not to mention the NYTimes pens what seems to be about five Twitter related stories a day. (Tech reporter Saul Hansell counts 32 references on the newspaper's website on Tuesday of this week.)

And we won't event get into the whole Oprah/Ashton thing.

We're guilty too, having just posted about this virtual "therapy session" service on Twitter. To top it all off, comScore reported today that worldwide visitors to Twitter.com increased 95 percent in the month of March from 9.8 million to 19.1 million, according to TechCrunch.

So, our question to you is: How long until this Twitter novelty PR wears off?