Twitter is a free social networking and micro-blogging service that enables its users to send and read each others' updates, known as tweets. Tweets are text-based posts of up to 140 characters, displayed on the author's profile page and delivered to other users - known as followers - who have subscribed to them. Senders can restrict delivery to those in their circle of friends or, by default, allow open access. Users can send and receive tweets via the Twitter website.

You can also follow Paula and her tennis on Twitter.

Also as Hyves or Facebook you can make use of this Via this link, you can connect Twitter and Hyves to get the tweeds into your "who, what where". Very Simple.