I appreciate that kittylester .
I agree it is courteous to other members to think about which category to put the thread in, to have a clue about the subject in the title and yes, if you are posting a link, it would be polite to take the time to write a line or two so that others know what kind of thing you are going to see if they click the link. If someone sent me an email saying something like "check this out" and a link, I would think it was some kind of spam and choose not click.
If you just want to post links without bothering to write anything, join Facebook. There, other people can see a bit about the link without leaving the page.
The search facility on GN is not very good (to say the least), so it is very hard to find threads without clear titles once they have dropped down the list.
Finally - GN is getting really big and really busy at times. If you want people to read your thread you are going to have to 'sell' it, otherwise it will get ignored.