How much do you know about SPAC?

A special purpose acquisition company (SPAC) is a company with no commercial operations that is formed strictly to raise capital through an initial public offering(IPO) for the purpose of acquiring an existing company. Also known as "blank check companies," SPACs have been around for decades.
In recent years, they've become more popular, attracting big-name underwriters and investors and raising a record amount of IPO money in 2019. In 2020, as of the beginning of August, more than 50 SPACs have been formed in the U.S. which have raised some $21.5 billion.
What's your thoughts on SPAC?