It's hard to tell who came up with the plan in the first place...Grindr announced in June 2012 (took 'em long enough, huh?) that they would be adding this feature to their system, but Scruff actually put it into play several weeks before Grindr finally got around to it. That's what happens when you dawdle, I suppose.
Despite my disappointment in this (what I perceive as) regression, I had to play around with it as soon as the system upgraded, as one always does with a new toy. I hoped I may have at least a little room for creativity when selecting my 'tribe', but alas, the only group that I identified with in both circumstances was "Geek."
I can't say it's not accurate. I'm pretty geeky in terms of my interests, but the way this system is broken down seems curious to me. Some of the options are based on interest (Geek, Leather) and some are based on physical appearance (Jock, Twink, Bear). Not that I really want to lump myself into a category based on my appearance, because we all know how I feel about the word "twink," but the idea that some folks think that these are the categories gay men can fall into is...weird, to say the least.
I can't say the whole system is completely worthless. In the case of Scruff, you can search for people who are into your type, thus decreasing your likelihood of rejection by (most likely) a very small fraction. For example, I can indicate that I like "Transgender" men, and those who fit that label can have an easier time contacting me. Or, if I'm interested in someone but their profile indicates they like "Bears", I can save myself some time and keep looking for someone I might appeal more to.
Even so, the whole system is annoying to me. I felt both apps were going in the right direction when they were giving us more space to say who we are and what we're looking for, allowing us to demonstrate our individuality rather than squeeze ourselves into a few tiny little boxes. Apparently we aren't there yet, but one can keep hoping...