If you have to start a new thread here having been unable to find any answers then you already know the answer.
Just to clear up any uncertainty - it's a big, fat, fur lined, ocean going, five bedroom nope.
When it comes to the potential risks involved with mixers I just can't figure out why anyone would choose to wing it with somewhere no one's ever heard of.
Well, i mean they do have a couple of threads here on the forum, and (perhaps due to my lack of searching..) a lack of scam accusations.
See https://bitcointalksearch.org/topic/ann-smartmixerio-crypto-mixer-be-smart-be-anonymous-5168505
So, for small amounts they might work well. They look a bit like Bestmixer though, so not sure how trustworthy their mixing process actually is.
(And they seem to use stuff like cloudflare, so privacy is relative.. although, isn't Chipmixer also using some sort of anti-ddos company by now?)
Other than that- i gotta agree- @OP, if you're unexperienced, or already have doubts about a certain service- why try to use it when there are objectively better solutions out there?
Edit: just remembered that SmartMixer made use of bumping services for their ANN thread in the past. OP may very well be one of them.