No, I don't mind at all if you save a copy of the picture to show others. Keep in mind, though, that there was supposed to be one more section of blocks (a stripe/solid/stripe section), but I didn't do it because I didn't want the blanket to be that large.
I don't have the blanket any more (gave it to the recipient), but on the back, I just made sure I twisted the yarns as I went, so it actually looks pretty neat. From my research on intarsia it's the typical twisting you do so you don't get holes where the colors change.
Yes, I did the borders in intarsia--on the section that had the "stripe/solid/stripe" order of blocks, I was working with SEVEN balls of yarn--one on the first edge for the border, two for the first striped block, one for the solid block, two for the second striped block, and one for the last border edge.
One thing I'd do differently for the borders is that the bottom and top borders were 7 rows each, so for the side borders I did 7 stitches and placed a marker, which made the side borders just slightly wider than the bottom and top borders. When I do the blanket again (I will do it in "girl" colors next time) I will only do 5 stitches for each side border.
I will also try using a patterned (either self-striping or some other multi-color) yarn for the striped blocks, so I'm not dealing with so many balls of yarn.