Placemarker Safari
Extension

Placemarker is for those times when you wish you could save your place in a long Web page so you could come back to that point later without having to search for it. Placemarker lets you create special bookmarks, called placemarks, that it saves to Instapaper, Read It Later, Pinboard, or Delicious-whichever bookmarking service you prefer. (You can also save a placemark as a Safari bookmark, though you'll have to save the bookmark manually.)

The magic happens when you later open the placemark: Safari will automatically scroll to the phrase you selected when you created the placemark.

• In this release, I've changed the way Placemarker saves placemarks to Read It Later, Pinboard, and Delicious. For these services, Placemarker now saves placemarks using the service's API instead of using bookmarklets.
• In the case of Read It Later, I made the change because their bookmarklet was not correctly displaying the progress indicator when loaded from Placemarker. For Pinboard and Delicious, I made the change because I was not happy with the way their bookmarklets opened popup windows, in which you had to click a button to save the placemark.
• I wanted to make the same change for Instapaper, but I couldn't because their API (at least the non-oAuth one) for some reason strips hashes from URLs when saving them. (A hash is the part of the URL following a # character.)