adding a 'read more' button on a blog

Does anyone know how to add a 'read more' style functionality to a blogger blog ?

Are there SEO benefits / downsides to adding these ?

I feel like my blog should have one mainly because it's a little photo heavy.

Ooh. I might have found the answer here: http://support.google.​com …er.py?hl=en&ans​wer=154172

I'll check it out and report back.

I use Wordpress so my code is different from blogger but I'm sure a google search can help you. Also I use a read more link and I like it because super long post are annoying to scroll through when someone may not be interested in reading that particular post. Read more allows people to quickly scroll to the post that interest them and read those particular ones.