If you're a casual user of online services (which twitter users often are), do not use this. It's a software you have to pay for, which in its default configuration sends your twitter password over the wire in PLAINTEXT which means every schoolboy with a laptop can sniff your twitter password in a public hotspot. Without manual command line configuration (hey! this is mac, not linux) you can't change this insecure behavior, which is not acceptable in 2009. A new software where this should have been fixed has not been published in almost a year. In the light of recent twitter "password problems" I would actually stay away from twitter or at least 3rd party applications anyway.