<img src="http://tctechcrunch.files.wordpress.com/2011/04/download-1.jpeg" /><a href="http://www.crunchbase.com/person/geoff-rhoads">Geoff Rhoads</a>, co-founder of <a href="http://www.zulutimecorp.co
<img src="http://tctechcrunch.files.wordpress.com/2011/01/nest-egg.jpg">
Twitter’s core strength—limiting posts to 140 characters—has created opportunities for other websites and apps to siph