I have just seen your excellent new product Adafruit Perma-Proto Small Mint Tin Size Breadboard PCB
May I suggest a couple of things that this board has that could be implemented on your already excellent perma proto boards.
Currently on your permaproto boards the rails that run from the centre to the power rails have a gap one row wide where they end and the power rail starts. The mint size board doesn't have this gap presumably because there is so little space to use. I would like the perma proto boards to also not have this gap and here's why. I use connectors with 3 wires on them for sensors if there was no gap I could solder in a standard 3 pin connector base i.e. molex. across the power/ground/signal pins and then be able to plug/unplug them easily.
The other feature I would like added from the mint board is to implement central power rails as this would give me more flexibility in connecting sensor connectors and the ability to add 4 pin ones power/gnd and signal either side.
I hope you can implement these features as I have to use cheap and nasty board like this at the moment to get these features for my prototyping http://www.ebay.co.uk/itm/200703298675? ... 1423.l2648