The title says it all. The "Find blogs" option on the dashboard sidebar is nothing else than the good ol’ Tumblr Spotlight. On the other hand, the small banner below the Post buttons takes you to the tab “People You Know”.
Anyways, it’s good to see Blog directory incorporated to the sidebar, though it would be good to see it become a real “blog search engine” instead of featuring curated ones.
If you happen to never find captions from reblogs or replies you get from others in your homepage (because captions do appear on individual posts). You will have to remove some code from within your layout.
SOURCE: How To Show Captions on Tumblr.