I use imgur.
In imgur I use:
I click on the photo I want to use
Select 'Direct Link' and click on 'Copy'
Set the size ...this one is 'Large Thumbnail'
In Britbike I use:
Then the icon next to the smiley face and before the clapboard....'Insert Image Link'
and use Control V to paste my link in.
Then hit 'OK'
That is a great reading lamp Rocco