If you upload videos to YouTube and feel restricted by the 1GB limit, YouTube now offers 2GB of wiggle room as well as the ability to directly link to and embed high definition video.
To share a link that points directly to the HD version of a video, tack on "&hd=1" to the end of the URL. To embed a high-def video on a website or blog, click the 'customize' button (located to the right of the embed box), then check 'play in HD'. YouTube recommends embedding HD videos at 853x505 for "maximum enjoyment". My customise field had yet to show the "play in HD" option, but the feature should roll out to all users soon.
And while you're YouTubing, be sure to browse our top 10 YouTube hacks for other ways to enhance your streaming experience.
Upload Size Doubles + HD Tips [YouTube Blog]