As this is a question about the site I'm moving this topic to the site and feedback area.
To answer your first question yes, posting links by just copying the url or typing www.audiogames.net will indeed turn up as links however there is way which might be a bit more elegant by using bbcode.
This involves some code within brackets (usually to the right of the p on most keyboards).
So if you wanted a link which said "Go here to visit audiogames.net" you'd type
left bracket u r l equals http://audiogames.net right bracket go here to visit audiogames.net, left bracket slash u r l right bracket.
or using the proper symbols:
[ url = http://audiogames.net/ ] go here to visit audiogames.net [ / url ]
Put it all together and you get this:
go here to visit audiogames.net
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)