I am using Drupal 7 and love the architecture.There is only one problem i have.When i create content type.it Is published to the friontpage with title and summary text.I also used the gallery formatter module for the image gallery.The only problem i am having is how to add an image field to the teaser in order for viewers to see thumbnailed images in the summary text.Images must be positioned either to the left or to the righ.Please try to contribute whatever you have. Thanks

In drupal 6.x images come up in teaser view - as seen in my drupal 6.x blog - www.blog..net

However, in drupal 7, i had that problem 2. Before i solved it, i decided to test-run the drupal 7 site online,
and discovered that it has issues with a lot of shared hosting.

So i downgraded by blog back to drupal 6.2.

Anyway, for this problem you are facing, check out http://stackoverflow.com/questions/6355092/how-to-display-one-image-under-teaser-mode-while-multi-images-under-full-conten

Test your drupal 7 site online first. . .