Three things I noticed:
1 - Terms and conditions - parts of them that need to be seen are in a neon green colour that is almost invisible on a screen, against their white background. Screen shot below. normally I would highlight the offending text by - well highlighting it with my mouse / drag across it. Neon have prevented this from happening. you cannot copy, paste or select text from them. i may be wrong but I am pretty sure a contract has to be legible to be valid.
2 - Screen shot two below shows you have to agree to the terms and conditions to get the service but to do so you also have to agree to your data going to third party providers - you cannot agree to Ts&Cs without agreeing to being on a third party advertisers list. At best it is implicit rather than explicit consent to advertising. It is definitely morally dodgy and a cruddy way to do business. you can only use our services if you let us send your info to others whom we don't disclose and by doing so contract to let them do whatever they want to with your info (it's in the contract if you dont believe me)
3 - Sign out / opt out. communications from Neon require a DOUBLE opt out of two databases - illegal under the spam act. If you remove yourself from their SERVICES database, you are still going to be in their ADVERTISING Database that provides details to third party advertisers. You have to explicitly sign out of BOTH databases - ie two communications and a double sign out. - I haven't found any sign out options on the website anywhere - again a breach of the spam act - you must be able to opt out, in the same manner as you opt in.
Neon - Illegable Ts & Cs

Neon - Single sign in with no advert opt out.

Another poorly executed online business process with dodgy advertising and privacy practices. I bet they paid a fortune to some designer for the illegible Ts & Cs.