Using non-standard characters in the page title and meta description tag seems to be a growing trend in many industries. The idea is that by using eye-catching non-standard characters readers attention is drawn to their result first, even in preference to results that may be above them.
The practice of optimising search results to maximise click-through-rate is not a new one and has been used in PPC advertising to good effect for years, but where PPC ads have to go through an approval process (where many techniques are outlawed) meta descriptions and organic results do not, so boundaries can be pushed much further.