Did someone say "Discworld Book Club"?
"SEO" in this article stands for Search Engine Optimization (e,g., maybe you don't want your warning against some site or person to improve their search engine ranking positions on Google, yahoo, Bing, etc.). Won't prevent search engine bots from indexing your post with that text, but clicking the link won't aid SEO.
The nofollow tag is basically a notice sign for search engines saying “don’t count this.” Per article: "A no follow link is a link that does not count as a point in the page’s favor, does not boost PageRank, and doesn’t help a page’s placement in the SERPs. No follow links get no love. Theirs is a sad and lonely life.". By removing referring site as well, makes it harder to trace back to your own sites.
On booklikes, to insert the nofollow tag, create your link* then edit the HTML (the last edit option on menu line with block quotes, bold, italics,merc. that looks like a less-than-sign greater-than sign) and manually enter it. Add the rel="nofollow" right before the link's closing > .
*Normally, just typing in the link starting with "http://" creates a URL link in a booklikes post. But, if your created link appears in your post as, for example, "http://blog.booklikes.com" instead of http://booklikes.com -- try just adding a space immediately after as a quick fix. Signifies to booklikes the url is finished ( and allows more complicated links with = ? / , etc.). If that doesn't work, highlight link text and click the chainlink icon to insert relevant info (if still nothing working, resort to the HTML editor and manually type in the code).
A random find on opening page of booklikes Daily Deals.
This one is available lots of places free (public domain, out of copyright). But just noticed it and convenient to put it on my kindle while this edition is free.
UPDATED: I just had to keep browsing. So also got this superhero origin story:
I broke my own rule about ya books with half a girl's face on the cover because says it's a superhero origin story. Could be a bad book not ready to publish, could be too full of teenage angst, or could be a great superhero story — but, I downloaded it anyway.
More freebies at http://booklikes.com/dailydeals/free .
More deals at http://booklikes.com/dailydeals/discounted .