[kenmck]

This seems an odd fit to me. Groupon has a reputation for not being concerned whether the deals it encouraged businesses to run are good for the business. FeeFighters has had a reputation as a sincere advocate for SMB's.

[kinkora]

Which could possibly be the reason why they acquired FeeFighters.

Companies sometimes make acquisitions to augment what they are lacking.

[adamjernst]

So it's a great opportunity for some synergy: FeeFighters can really help out Groupon.