Twellow - another Twitter search | Social media kitbag | Scoop.it
I have used this to search for contacts and current topics in the countries I am travelling to.

From the site's blurb: "Twellow.com has been designed from the ground up to help you "cut through the clutter". From our home at Twellow headquarters, we're actively searching and categorizing millions of inter-personal exchanges available on the internet every day. Twellow.com is thereby able to assist you in finding real people who really matter. We're doing the hard work of sifting out people who can help bring your vision to reality, whatever that vision might be."