I've seen this too quite a bit at FT 0.10/.25. Also, min bet on flop and another on turn, then raised up on the river. When I see a min bet, I usually think it is an intermediate player hoping to find enough strength to get a caller or two when he wants to bet out stronger, or a really poor player betting a second or third pair. The poor player will fold though when you raise unless they're a maniac (then lucky you).

I am a newbie, so what do I know, but I have seen how this is like a not horrible play at $25 NL that will win some pots. Myself, I am usually happy to take the pot down early and move on and wait until I have some callers with a good hand. There is too much risk on getting outdrawn. I think it's just really a slow play with a feeler bet to check for enough strength to make a bet - from what I've seen at $25 NL.

Feel free to correct me here if there are holes in my thinking, I would love to learn another level.