I've found that the best software general macro software (for windows) to use for building automation scripts to do things like add friends on social networks, send messages, etc is to use the AutoMate software (by network automation) and use this in combination with a few firefox plugins (imacro, outwit and tab renamizer)... I've been pretty effective with this in making some scripts, for example I did one for friendster that adds friends.. The software takes a little bit to learn but its not all that hard and once you learn it you can create these types of scripts fairly easily. I'm interested to find anyone who wants to collaborate and share scripts made with this, for example I send you one from friendster you send one for myspace, etc, with a few people we can get a lot done pretty quickly. Also, its easy to integrate this with a captcha service like decaptcher. Only a few changes need to be made to make a script run on your machine, mainly just changing the mouse coordinates to fit where stuff is on your screen (takes about 2 minutes to do this). If you're interested post here or pm me and we can talk more and I can send you the demo script I have for you to analyze.