Originally Posted by MSPeconomist

However, it's still the case that anyone with an email address from one of the targeted companies can stay 20 nights rather than 60 and get Glob benefits, including upgrades at check in, which is an example of a zero sum benefit. I don't want to lose my upgrades to such people. I also don't like overcrowded lounges or seeing hotels cut back on lounge offerings because it's too expensive to offer free F&B to so many people.