Here are some social media monitoring and auditing tools to help you keep track of how helpful your social media accounts are:
Addictomatic — searches across multiple social media networks
Google Blog Search — searches blogs for mentions
BlogPulse — free Nielsen tool for measuring blog mentions and giving them weight as positive or negative mentions. It applies machine-learning and natural-language processing techniques to discover trends in the highly dynamic world of blogs.
Technorati — searches top tech blogs for mentions
HowSociable? — HowSociable provides a simple way for you to begin measuring your brand’s visibility on the social web.
TweetBeep — Keep track of conversations that mention you, your products, your company, anything, with hourly updates!
BackType — find, follow and share comments on the web
BoardTracker — an innovative forum search engine, message tracking and instant alerts system designed to provide relevant information quickly and efficiently while ensuring you never miss an important forum thread no matter where or when it is posted.
BoardReader — accurately find and display information contained on the Web’s forums and message boards.
SocialMention — Get a snapshot of social mentions (use advanced search to limit to English)