It kind of proves that they are scammers honestly, why would they close the topics If it's not because they got exposed? I can't say that they didn't make it look legit (even If it's just a little bit) with the Spreadsheet on Google documents + the beautiful design of the signature.
The spreadsheet is not being edited anymore as well:
https://docs.google.com/spreadsheets/d/1zE__87DOv3PLcM8MaOzqbByj6k31cbHE19qDyCYiRYI/edit#gid=0 , I know there was someone called "Bitcoin evil" editing that file but not sure about the email or If someone could get the email just by the name.
The signature is actually incredibly simplistic in nature - using a few ASCII symbols for the arrows and hearts, and the rounded font choice of Century Gothic with their colors. However, the spelling errors in the member and full member signatures add some hint of sketchiness - "powerfu" and "powerfull" respectively.
You can't get the email via just the name - you would have to be a part of the document (have it shared with you) to see the contributors' emails and information.
https://bitcointalk.org/index.php?action=profile;u=387329laiyskylone has liqui exchange in his signature, the original ann-post for the hybridmixer sigcampaign promised to pay out to the liqui-exchange deposit address of the sigcampaign members (IIRC). This text was edited out pretty soon, but i was one of the first people who read the OP of their sig-announce thread, and i seem to remember it.
Also, IIRC, liqui-exchange also ran a promo giving away 1 LTC
Coincidence???

Liqui has also been having some issues with their campaign members, IIRC.
i have not yet received any payment in my liqui account.
and just for the record i am leaving this campaign and i would be happy to join again if your pay-rate is competitive and also you have fixed the problems.
its not work on my account, my btc balance still 0
please recheck again sir

He provably opened another campaign to scam people to be able to pay for the dues on liqui campaign
Or maybe hes planning to get a way as soon as someone tried his so called mixer.