I've never heard of them either, but you should create a list of questions before moving forward involving direct
SEO methods by grey hat, black hat and white hat.
For example, find some directories which have been penalized over and over again, they are going to be in the grey and black hat area and ask them if they can get you in them and why it is a good idea. Try to trick them up and see if they are honest or at least know what they are talking about.
Ask questions about Google
PR and find out if it is still relevant, if it should be a major deciding factor in buying a link, etc...
Regardless of which company you may forward with, make sure it is white hat, not grey and most certainly not black. If you use one of them, you are looking at long term troubles with short term success.
Also, do not forget that just because they do not show up for their own terms does not mean they are bad. Many of the very best and top
SEO firms will never show up for their own terms because they focus all of their time on their clients and put themselves on the backburner.