LinkedIn's IPO is bad for the market, Cramer said Thursday.

The "Mad Money" host took issue with how the social media company's pricing. LinkedIn offered a very small amount of shares to generate buzz and deliberately get everything "frothy," he explained. It let just 7.84 million shares go at $45, which is top of range. By offering a "small sliver" of stock, the brokers are able to engineer a pop, he continued. Sure enough, LinkedIn's stock soared by 171 percent at one point in its first day of trading.