You can obtain backlinks by submitting your RSS feed to the RSS feed directories.
RSS Feeds Directories:
blogbunch.com/suggest
blogcatalog.com/account.add.php
blogintro.com/?page_id=925
bloglisting.com/addablog.html
blogpulse.com/submit.html
boingboing.net/suggest.html
daytimenews.com/submit-rss-feed.aspx
feed24.com/?c=add
feedbase.net/Add.php
feedbomb.com
feedfury.com
feedmap.net/BlogMap/submit.aspx
feedplex.com/
feedsee.com/submit.html
findrss.net/A55711/rsscatalog.nsf/submit?openForm
fybersearch.com/add-url.php
icerocket.com/c?p=addblog
jordomedia.com/RSS/l_op=Addrss.html
millionrss.com/add-my-feed.php
octora.com/add_rss.php
paiddirectory.com/feeds
plazoo.com/addrss.asp
pressradar.com/suggest
rssfeeds.com/suggest_wizzard.php
rssmicro.com/
rssmotron.com/feed_eater.php
sarthak.net/blogz/add.php
search4rss.com/index.php
solarwarp.net/submitrss.php
(1) The jury is still out about whether there is added value in getting backlinks from sites in your niche (not talking about getting pass-through traffic, just the backlink value). Many many people feel this is way overrated, me being one of them.
(2) With respect to "do follow", it certainly has a value by google, but really no effect as to yahoo, etc.
(3) You briefly mentioned this sort of thing in the "hitch a ride" section, but IMHO the best and easiest way to get great quality backlinks is from putting links in your profile and forum and web 2.0 properties, where the underlying domain has a high PR. Many of us have had phenomenal success with this linkjuice.
(4) Not everyone agrees as to how much of an issue it is to get tons of backlinks quickly. Many believe that the whole Google sandbox thing is way overrated. If we are talking thousands and thousands to a new domain, then OK. but I don't think throwing a hundred of backlinks at a EZA article a day is going to do anything but help you get to the top of google.