ternstyle

As long as each service provides a feed of the entries, yes. Each service will have its own benefits and limitations however.

A server migration might mean the folder permissions changed on /wp-content/cache/timthumb folder. This folder will need to be chmod 0777.

the use of the following function will display the images manually wherever it’s placed:

<?php tern_wp_youtube_thumb(); ?>

Whoops…missed a parenthesis.

<?php if(get_post_meta($post->ID,'_tern_wp_youtube_video',true)) { ?>
<?php tern_wp_youtube_video(); ?>
<?php } ?>

Check to see if the video exists first.

<?php if(get_post_meta($post->ID,'_tern_wp_youtube_video',true) { ?>
<?php tern_wp_youtube_video(); ?>
<?php } ?>

Not without customizing the plugin.

This is something you could accomplish with CSS.

This is something you can change in the plugin settings.