Several for-profit companies now make personalized genetic testing more widely and readily available than in the past, adding the particularly attractive feature of widespread comparison amongst people’s genomes.
The usefulness of such genetic testing (for orphans and non-orphans alike) resides almost wholly in the breadth of participation by other people who have been tested, since the hope to locate one’s immediate family depends heavily (maybe entirely) on whether someone in that family has also been tested at the same site as you (but see the note on GEDMatch below).  Such testing will most likely provide indirect clues to one’s actual genetic family (second cousins and further back), principally because there are simply more of those to be found, and especially if one’s needed “search base” is transnational.
In brief, such testing offers a tool not an answer. It requires work (from the orphan) and often depends upon the kindness of (distantly related) strangers to yield actual “answers”.  That is, when such sites “find” that one has 500+ “third or more distantly related cousins” represents a kind of bad faith as an answer to “who am I related to” (or “what is my origin”).
I suspect that orphans may hope, but don’t really believe, genetic testing will provide an easy answer, but it seems clear that such a prospect is part of genetic testing’s pitch (to orphans and non-orphans alike). This opportunity for genetic testing tempts people to throw their hat into the “genetic searching” ring, promising some kind of “answer,” which, in fact, will almost certainly only be forthcoming if you do a lot of necessary work to “make” that answer. And if your answer even “exists” within the pool of people searched–again, an important issue for transnational orphans.
In general, I would note the much greater social justice in the demand to open previously closed adoption records than to emphasize any “work-around” that genetic testing might offer orphans. Whatever value genetic testing would or does have, to “locate one’s immediate family of origin” seems a red herring, tempting but not the most desirable gesture.
So what “good” (or “bad”) is genetic testing for orphans?
 This has occurred, ironically enough, at a time when states like Washington have instituted new rules allowing access to previously closed adoption records. This rule goes into effect tomorrow, 1 July 2014. My petition is already submitted.
 One of these developments includes GEDMatch, an independently operated genetic comparison database service that takes results from several for-profit (pay) sites, and lets you look even more widely and powerfully into degrees of connectedness with other genomes. As a volunteer-run, free service, keeping things running on their shoestring budget could use our support generally, especially as it adds strength to one’s ability to research paths of relatedness and origin.
 Like any “Internet” forum where the public gathers, the degree of helpfulness (and thus the degree of usefulness) in genetic testing varies. I’m fortunate to have landed in an anthropological sub-niche, which not only has dissertations and papers written about it, but also generates its own genealogical interest amongst its members. Without this help, short of a crash course in self-education (if I had been able to figure that out without any on-site help), access simply to the genetic information itself remains largely vague and not useable.
 Rather like the injustice of the child who has to pay for psychotherapy to deal with parental issues, the orphan is asked (or commanded) to bear the cost of this. My sister, who is also adopted, actually persuaded my adopting parents to pay for her psychotherapy, but when it came to hunting down her genetic relatives, she didn’t submit a similar demand for help.