Just uploaded a minor modification to ThinkTwit that adds filtering (so you can use apply_filters) and also adds nofollow tags to URLs.
About Stephen Pickett
Stephen Pickett is a programmer, IT strategist, project manager, RightNow and telephony expert, information security specialist, all-round geek. He is currently Professional Services Director at Connect Assist, a social business that helps charities and public services improve quality, efficiency and customer engagement through the provision of helpline services and CRM systems.
Stephen is based in south Wales and attended Cardiff University to study Computer Science, in which he achieved a 2:1 grading. He has previously worked for Think Consulting Solutions, the leading voice on not-for-profit fundraising, Fujitsu Services and Sony Manufacturing UK as a software developer.
Stephen is the developer of ThinkTwit, a WordPress plugin that allows you to display multiple Twitter feeds within a blog.