Never heard of them. If what you received in the mail was a big fat check, beware it will be a big fat fraud. Generally companies do NOT mail you anything except a paycheck well AFTER you do the work. Generally companies will wait for you to register with them before there is ANY contact at all and even then, YOU will be the one generally to instigate a request for a job. To give you an idea about this, most legitimate jobs pay between about $5 and $20 depending on how much work is involved. If you are being offered $200 'compensation for your work', realize that in the real world that is likely to be compensation for a mystery shopping job that took you about 20 hours to perform and report--if not more.
So if what you are being offered sounds too good to be true, trust me, it is. Do not attempt to deposit a large check from an unknown company. Yes, you will find similar name companies out there and the chances are that the check actually links up to a real account with a real company where there are funds to cover the check. Unfortunately the person who signed yours is not an authorized signor on the account and when this is discovered the check will bounce, all the way back to your account. If meanwhile you have wire transferred funds or spent them, you are out of luck. You will be held responsible by your bank for reimbursing every dime.