Twitter to Atom converter:

 $ twitter2atom.pl '#elag2013' > feed.xml

Twitter importer Catmandu style:

Usage:

use Catmandu::Importer::Twitter;

my $x = Catmandu::Importer::Twitter->new(query => '#elag2013');

$x->each(sub {  
	my $obj = shift; 
	print $obj->{text} , "\n";
});

or lazier via the command line

$ catmandu data --from-importer Twitter --from-query '#elag2013' --into-exporter YAML

See the Catmandu project for more examples: http://librecat.org