What’s the catch?

interrog. What is the drawback?; It sounds good. Are there any hidden problems? Sounds too good to be true. What’s the catch?

Name	Pronounced	Usage
Klahan	-	Thai
Kimberlyn	KIM-bər-lin	English (Rare)
Rhiannon	hri-AN-ahn (Welsh), ree-AN-ən (English), REE-ən-ən (English)	Welsh, English, Welsh Mythology
Snell	[snel]
Garth	[ga:θ]
Corina	-	English, German, Romanian