HomeAway Prices IPO: buy or sell short?

HomeAway Prices IPO At $27 Per Share With A Market Cap Of $2 Billion

Ratios:

Price/Earnings: 118.3

Price/Revenue: 11.9

How will AirBandB.com and HomeAway collide? What differentiates them is a filter for whether you want a room or an entire residence, if that. Or are they going to try to split the market in a "gentlemen's deal"?