Another benefit of Twitter, if you have network connectivity, is that it updates its search ability faster than Google updates its info via it's internet-wide spiders.

For instance, if you're in a post-thunderstorm area, and you're trying to find out if a main road road is clear between your home and a family member's, chances are a busy road should be traveled by someone with a smart phone. A quick search on Twitter for the road's name, and you'll possibly find a tweet about it (especially if a tree has fallen in the middle of it). At least if there are reports, it'll show up hours more quickly on Twitter than as a news result on Google.