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I agree with Bill that we need to keep an eye on the sizes of file
attachments. There's no question that most of us find them useful, but as
you can see by the attached graphs, there has been a big increase in total
file sizes recently. Also, if you see your initials in the lower graph, and
there's a tall bar above it, please just be careful about reducing the sizes
of your images whenever you can.

The grand total for attachments so far this month is slightly more than 16
megabytes, which is more than 85% of the total traffic for NavList this
month. This is nothing compared to the size of a lot of other Internet
content, like a short video, for example, but bear in mind that attachments
are sent out to all NavList members so we're responsible for about 8
gigabytes of network traffic this month. That's like downloading ten
full-length movies. So in other words, our attachments represent as much
traffic as one file-swapping college freshman on a Friday night :-). But for
NavList members with limited bandwidth, it's still a pain in the neck.

The top graph (see attachment!) shows the total megabytes for all
attachments larger than 100k sent out in the past five years. The current
month is on the left. The lower graph shows attachments per person in the
same period for all list members who have used attachments. Attachments
smaller than 100k are not counted in the totals. NEARLY ALL of these
attachments were relevant and useful. Attachments have always been used in
this group, since long before I was "list owner", and the technology for
producing them just gets better and better. I think this is the primary
reason for the increase in file size. Incidentally, I excluded two very
large attachments which were sent accidentally (one for certain, because
there was a sincere apology ten minutes later, the other probably an
accident since the content surely had no relation to traditional navigation
 --both before I was "list owner" incidentally).

One specific suggestion from me personally: please try to avoid quoting back
a complete message ESPECIALLY when it contains graphics or an attachment. If
you send a message that says something short like "thanks" or "I agree" and
you auto-quote an earlier message that is 500,000 bytes in size then you
will re-send those 500,000 bytes to all list members. So have a look at your
email software and see if you can figure out how to turn off auto-quoting in
replies.

 -FER



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