Review Startup, jobmigo.com - Real Time Job Finder, Powered By Twitter
mtw: A few comments: 
- the tagging tool doesn't work well, tried Senior System Administrator, didn't find category, same for CTO
- I tried "CTO at companyx, Montreal, Canada" it showed "text too short" 
- you might wanna also weigh in the number of followers to rank the tweets. I think a twitter bot will have less interesting tweets (auto-generated tweets), while a company's official twitter account will have much more followers, with legitimate twitter jobs
- you should also have a navigation menu, or search function to find jobs by city or countryalso I'm ok with using the hashtag rtjobs, but #jobs is more obvious no??