No, friends page links are actually completely useless, as LJ inserts robots/nofollow text so Google won't follow it.

If it shows up on post pages it'll read it, but links on the very front page of a domain count for a lot more than anywhere else (mostly due to the way PR works, short version is each page accrues rank, that also applies in a little to the domain its attached to, but individual pages have a lot less than the domain itself).

But no, a friends view link does nothing at all, if it did, then LJ would've broken Google already with all the interlinks caused by friends pages.