When someone bids on your brand name in Adwords, then you know …

I was googling Linkworth, as opposed to typing their URL - since because as usual I am too lazy to type the url (http://www.linkworth.com) to go to their website and noticed the following Adwords.

Is it actually okay to bid on your competitor’s brand name?

Looks like Text-Link-Ads.com (TLA) buys “Linkworth” keyword in Google Adwords.