Oliver, we are more than happy to help ID your glass, whether you are selling it or not. This is a research board, so we ask for images to be uploaded to the board so they remain here as a permanent reference. We have topics with links to images hosted on services such as dropbox, tinypic, photobucket, etc... which have since been deleted, which then reduces the value of the topic they were posted in, and sometimes makes the topic completely useless.
The rules we apply are to help make the board run smoothly, the small number of moderators (me included) are volunteers who give up their free time to help out, so we have tried to create a system which makes it easy for mods to keep on top of the workload on this very busy board. That's why you've been asked to post your items in a certain way, and for no other reason.
Please do continue to ask about your glass, bearing in mind the points above, and we'll be able to help you much better, thanks!