Fully support it, as my closest friends might have caught on. My reasoning, however, comes with the theory of Actual vs. Idealized Self. I'm sure someone else has long since published a form of this, or disproved it in one way or another, but I've adopted it as a personal belief with relationships.
Essentially, the idea is that good relationships are based on compatible "idealized selves", not "actual selves". Internet dating involves the purest form of the Idealized Self. I've found that most face-to-face relationships start out with a sharing of commonalities: Our common faults (ex: a laughable addition to coffee or smoking) tend to create the strongest bond. By pursuing relationships based on these mutual flaws (note that whether the flaw is "actually" a flaw, or just the perception of one is irrelevant), we reinforce them by having this partner who constantly struggles with the same flaw (or at least is more sympathetic towards it), ultimately making both partners miserable and self-loathing of their flaws and of their partner's flaws.
Internet dating uniquely allows each user to create a profile portraying the Idealized Self. It's easier to lie on a profile or chat conversation, expressing your idealized interests (ex: painting or hiking), not your actual interests (ex: spending hours on Facebook). If a couple is able to bond over hiking initially, I think they would be more likely to encourage each other to hike later on in their relationship, ultimately hiking more, and helping each other toward their Idealized Self. The closer an individual comes to this self-defined Idealized Self, the happier they will be, and the more content they will feel about their life and partner.