is this crab good or bad (pic)

[Linina]

word on the reef discussion so far is bad, but i want to make sure before i toss him. Thanks much!

 

[Tayler]

looks like a xanthid crab i would toss him or put him in your sump.

 

[rlf_racing]

Don't toss him. He is a bad crab, looks like a stone crab from the coloring. Put the little guy in your sump.

Why is it everyone outside of Illinois is finding nonreef safe inverts. I would take everyone that is offered here.