In regards to ltcminer.com
While I can’t say for sure, I would be cautious. One red flag I see is they aren’t giving information onto how they are mining. Such as there equipment or locations. They also appear to rely heavily on affiliate programs which is also a red flag I didn’t mention earlier. If a site is a Ponzi scheme they rely on new entrants to pay there old one, which is why they are always pushing for affiliates.
One thing going for the site, it’s been around for a long time. That doesn’t necessarily mean it’s more trustworthy, if they’ve kept a low profile maybe they’ve just been able to limp a long for a while.
Something else strange, when you look at there payouts section that they’ve created to “legitimatize” there site, the payouts all come from different addresses which the send from address balance is almost 0 at the end of it. If it was a true payout I would expect it to come from a larger wallet.
Something else to take in mind, there contact address comes up as a mail forwarding company. They clearly don’t want anyone know there true identity. Not unheard of in legitimate company’s, but again not confidence inducing.
Again, I can’t say for sure that it’s illegitimate, but it doesn’t inspire confidence.