Twerch is a new way to search Twitter.
By encouraging people to use postcode hashtags in their tweets we provide a local search for items in twitter.
This is very useful when combined with other hashtags e.g. #UKJOBS, #JOBS, #EVENTS, #FORSALE, etc.
Twitter's geo tagging is ok, but doesnt provide the flexibility, particularly if you are wanting to tweet about something that isn't next to the computer you are using.
Instead Tweet that Postcode!!