If they put them in a "playlist" then you can click on "play the entire list" or something like that, and it does so in order.
I believe you can even do this yourself by clicking Add to Playlist or something similar. The people I listen to usually have prebuilt playlists, that's very helpful. They often have a link within or underneath the first video (or first few videos) saying "click here for playlist". It's good for hands-free listening, when you play a lot of Bejeweled like I do :)
I cannot express my gratitude to all of you who took part in creating these videos. Yes I loved the audio and yes, hearing your voices conjured up your faces (and more!) in my mind's eye, but since I am very visual, I love the video much more! Also the new ones are nearly two hours long apiece! But like Tom has said, people may not want to rewind and fast forward through 2 hours of video to find the portion they are looking for.
I guess I can see both sides of the argument, but I never would have found Tom, Max Igan, Bashar or a lot of other wonderful teachers had it not been for YouTube, and I feel a lot of love for that site because of the learning, wisdom, knowledge and entertainment it has the potential to offer everyone, and has provided myself personally.
But that's just my three dollars :)