Mega Robot Bomber has this list of features:

Multithread System with 90% socket and httpwebrequest

New System with socket supporting Hellotxt, both more accurate and faster

Hellotxt is your personal social networker...a Social Dashboard for your life online. Our free service, accessible via web, WAP, and smartphone apps, is designed to help a user communicate easily with their contacts, whichever networks they are on, and in both inbound and outbound communication. Our tool also makes it easy to engage and have more fun with the media you post to web 2.0 services. Hellotxt works with the world's most popular social networking and web 2.0 sites, including Facebook, Twitter, LinkedIn, Tumblr, Posterous and WordPress.

Create, submit and promote unique content in Social networks, articles directories, RSS directories, Bookmarks sites, forums and websites.

Create, index and energize backlinks. One tool that accomplishes this within Mega Robot Bomber is Web Spider. This tool extracts all of the URLs of the specified website, checking the rankings of all of the pages on Google, Yahoo, and Bing. Then, create an RSS feed of the pages and submit that feed into the other MRB tools to index page