okay i keep forgetting how to do this because i get of AG for a long time and don't get back on anyways what i forgot was how to make a link show up as this ----> youtube http://www.youtube.com/user/RayWilliamJohnson
In your post, before submitting, highlight the bit of text to be linked, then press the "link" button on top of the little posting screen; a little window pops up where you an add the link. Hit OK, and that's it.*
You'll now see that bit of text wrapped in a code at beginning and end. (If I repeat it here, it would probably not show up as the code, but rather produce a faulty hyperlink instead, LOL )** Manually adding that code, instead, will also work: Same thing, indeed. Note the code repeated at end starts with a slash /, signalling the end of that code to be used.
* One note: I think hyperlinks within quotes tend to break here, I don't know why. I do think it explains a lot of instances of faulty links being provided by members here.