Twitter has officially launched Promoted Accounts, the latest in its updated site features for interacting (and marketing) on the site. Announced last week, Promoted Accounts is an extension of Promoted Tweets, which Twitter put out on the market last April.

Twitter Accounts is an algorithm-based recommendation tool, that delivers targeted content to users. Accounts are suggested for users, introducing others they may be interested in following. These suggestions are based on the users you already follow. It’s quite similar to Facebook’s recommendation tool, encouraging user engagement and clicks as its underlying determination.

More towards Twitter’s monetization and advertising, a few other updates have been announced today, namely Promoted Products for Partners (say that three times fast). Promoted Products seems to be picking up a bit of the slack from its earlier project, @earlybird, promoting various items through microblog advertisements.

HootSuite is a partner on this one, tying in with some of the other metrics and analytics tools that Twitter and third party developers are striving towards. “This is an important step for these partners and for the many highly active Twitter users who spend considerable time on third-party applications,” reads Twitter’s blog entry. “As with all Twitter launches, we’ll review the initial feedback and determine where we take it from here.”

Where Twitter is likely to go, one way or another, is the analytics route, as the company has already shown an intent for offering up metrics and reports to advertisers and brands. It’s where Twitter’s true value lies, and converting that into something tangible for users and marketers is where Twitter stands to really show off. For now, Facebook and Android are heavily vested in similar efforts, so Twitter will have to continue to watch its step as it determines which features and tools to keep and which to offer in the future.