Hey mate, only just saw your post. Been a very busy period and haven't had the chance to log here or either Flickr to add more photos. Now, taking your queries one at a time.
I did try using a soft box but what ended up happening was the soft box covering my subject thus getting it under exposed. see here:
https://www.flickr.com/photos/antonispapavasiliou/9328535364/
Unfortunately since then i moved to another house with less of a mess in the garden which means i don't get to see as many bugs anymore unless i venture towards the country a bit which would scare the old people around my area ( a slow moving guy on his knees for hours and hours trying to shoot bugs) ;D
I also see what you mean by the flash "affecting" the colours a bit but i'll be honest i kinda like it ! I'd prefer a more natural feel to it but i guess giving them a "model" look sometimes gives a different feel to the photos.
As for Flickr am not sure how much safer it is from Facebook ( i know FB owns any photos that are uploaded there) but i like the interface you get with Flickr. Strictly photography and no other annoyances… As for a copyright symbol and logo just make a template using any software you have and then layer it onto of your images ! That's how i do it !!
P.s. Thumbs up on your photos on Flickr.