I think this is a great idea. Short of taking a class (community college/on-line) there isn't much of this kind of stuff available. Your offering up of yourself to the craft is very generous. I am sure you have a lot to offer those who would seek your services. One thing I really liked was that only select photos will be reviewed. This implies that you will critique photos that show promise, but don't quite attain all that is possible. That is a good and valid decision, especially considering you are doing this at no charge.
That said, please allow me to react to your linked reference. Please forgive me if you find this to be nit-picking. It is one person's reaction, nothing more.
The first thing that popped into my head was that while you refer to yourself as a professional, your website belies (rightly or wrongly) that fact. The name of the site seems gimmicky to me. I read 'fotocritique' as trying just a bit too hard. I suggest that 'photocritique' is a bit more standard. 'Professional' implies that your product can stand on its own merits. The gimmicky 'foto' just seems inappropriate.
Since you present yourself as a 'professional', I expect your site to reflect that. I make no comment about your photographic skills, but your website presents a less than professional face to the world. It contains spelling, grammatical, and punctuation errors. Have a proof reader make sure your site presents itself in the best light. I once called a professional handyman for some work on my home. He showed up at the appointed time for my free estimate, in dirty clothes he had worked all day in, smelling of sweat and tobacco smoke, with a lit cigarette in his hand. I dismissed him out of hand as not the professional I was looking for. His presentation did not match his claim. I'm not saying you stink, just that your presentation does not match your claim.
Lastly, my thoughts on the specific offerings on the page. I think your offering is narrow, photographically. This may be intentional, and aimed at a specific type of photograph/photographer. It is your site, and you are offering your time. Therefore, limiting the service you offer is quite within reason. I am sure you know this, but there are myriad ways to deploy a camera. The text on your site seems to imply that yours is the only valid way of taking photos. I read the presentation as: shooting a lot of frames is poor technique & chimping is always bad. While both are true in some circumstances, both are certainly valid methods of getting either the shot you want, or of learning how your camera settings affect the outcome of releasing the shutter. I have used high-speed burst mode on a 1DIV to come home from a football game with well over 1,000 photos. The 5 or 10 spectacular ones (on a good day) I get are worth the time and effort. There is no better way to learn DOF control, and the effects of different settings than: take photo, look at photo, adjust settings, repeat. If I send a photo, and you decide to critique it, how will you have any idea whether or not I was 'spraying and praying' or chimping every shot? You can't possibly know, so why does it matter?
Thanks again, from the entire photographic community, for offering your services. Good luck with your efforts. Helping others is one of life's greatest rewards. Best of luck in turning this into exactly what you want it to be.