The Photobucket apps for Android is pretty good, I assume it's the same for iOS - loads of features and you got the img tag at the tap of your finger.
Absolute doddle on the iphone 5 jay, opened up he forum, tapped on image, and put it into camera app, opened up photobucket on Iphone and transferred the pic, then Photobucket on the MBP and swapped out the old Imageshack code, and in with the new... can't believe even I managed to do all that

Just happy that the sig is back at least for me only! would still like to get to he bottom of the problem though, as more and more little blue boxes are starting to appear on here, and across the net...
Thanks again everyone for the input
Thom