RE: Trendline support Hey sparkdog,
What I notice with SH is that the image you want to add to a post has to be on the Internet already, that is, you can't upload from your computer or copy/paster from the computer.
Here's how I do it:
1. I find the image I want to use and either use the snipping tool (windows 7+) or if I'm on XP I press <ALT>+<PrtScn> to do a screenshot I can past into paint.
2. Then I go to imgur.com and upload the image to the internet
3. From there I can right-click and copy the image and paste it into SH.
It's painfully awkward but it does the trick