[treetopsandroofs]

Some professional sites only allow some number of characters/words to be posted (republished).

Isn’t there a list here somewhere of those sites?

[mairdie]

I don’t know. I’ve never found a rules page. I assume there must be one.

[shibumi]

Here are the owner’s guidelines -

http://www.freerepublic.com/focus/bloggers/2636843/posts?page=557#552

Here is the “Excerpt Only” list -

http://www.freerepublic.com/focus/f-news/1111944/posts

It should be noted that in lieu of constantly updating
the list, the posting program now forces excerpts where
necessary.

The vast majority of blogs you see being excerpted on FR
do not have this restriction.