A sure and safe sign:

144. Every members ever posted in the Brusbane forum have just received a PM from a new shop, inviting them to give the new shop a try and if they mention about the PM, they can have a special offer of either a $10 discount or a 15 min upgrade !

But what if this is a legit shop ?

Don't worry, at the end of the PM, there is also a line of a fine prints: standard tips of $20, $50, and $100 Not included !!
Legit my ass !!

Cheers