I have also noticed recently that my overseas sales tend to come in waves. None at all for maybe a week, then a few all at once.
On Tuesday evening, for example, I had thirteen sales, twelve of them from overseas, from France, Denmark, and USA. Within 24 hours I had one more overseas sale from a total of six, but that one sale was for multiple items, and was for more than the other five combined.
I'm sure there is something in the algorithm, as thinhs like this do tend to crop up from time to time. A couple of years ago, a similar topic was brought up about orders coming form the same geographic area in UK. At the time, I found that over 20% of my orders (approx 250 orders in total) were from the PE postcode in England. I still find a high proportion of buyers with that postcode, although they are predominantly new buyers, so it's not just regulars skewing the figures. Others had similar experiences.
