It's absolutely spam (most likely). There are programs out there that open up accounts on dozens of different sites just so the authors can post spun versions of articles they probably didn't even write in the first place. These programs generally aren't sophisticated enough to load up an avatar.
Aside from low quality, 2 other big signs of spam to watch out for:
1) Minimal linkages and to only one or two different sites. These sites are rarely, if ever, well known sites because they are the sites the author is trying to promote.
2) No use of any modules, just a wall of text. Sure, it'll have paragraphs, but no pictures, no polls, no amazon links--only the adsense links that HP inserts automatically. The programs cannot accommodate every sites special publishing tools, so they tend to just dump everything into one text section.