Well one thing I always look for is to check whether they can get to number one for their search terms ... FAIL
and anyway ... I think the search engines would take a dim view of someone 'cheating' the system (white, black, green, yellow with black dots hat). They'd de-index sites in the short term and change algorythms in the long term.
Having said that ... give it a go with a site you don't mind losing if it goes belly up.
Very well stated opinion. Anybody can check SERP of 1on40.com using their keywords:
<meta name="keywords" content="1on40, free, seo, submitter, top google, top yahoo, submission service, top search engine result, guaranteed, number one google, first result yahoo, earn cash, affiliate, sales traffic, easy, fast, keyword, best." />
It sounds pretty much like a scam, and they may probably not harm, and not doing much other seo then directing backlinks to customers' sites, but eventually they'll charge god money from those bidders who eventually reached to top either by fortune or by other seo activities.
Anyway, what they are good in, is their affiliate program that converts like crazy. I am wondering whether will they actually pay some cash to affiliates after April 20, as 1on40 stated in their news?
As an affiliate I've already earned credits in value of $400.
It's like a lottery, but it didn't cost a dime. I'll report about my experience at the end of April / beginning of May.
By the way, my test site jumped about +30 positions on Google SERP since joined to 1on40, but I am not sure about the actual reason of this increase in rank.