In shop search, a shop name such as My shop (with the unclosed HTML tag) not only makes that shop name bold, but it can mess up the layout of the table containing other shops after that. Those HTML tags should be escaped.

I brought this up with Keith last week, and he told me that shop names are not supposed to allow HTML. So I'll fix this asap. (I might have to talk to him again first.) For now, please open a ticket if you see anyone abusing this. Thanks!