Suggestion about "how can I remind each person of my network and find the appropriate one when I need it,quick" . Chris has a good method but he had to add tags and sometimes you miss to put the right tag or no time to find the good one. What about a tool with a non-structured database and a search engine which searchs all over one single word you enter in the data base? This is what I use: I do not bother with tags, I enter each person with all his story in one article of my private wiki (mediawiki). Then if I look for the women who cooks the best "spagetti alla carbonara", I enter "carbonara" in the search box. Et voila! Hope this will help.
Great! People around me do not understand what is Lijit, thx giving them bright explanation. I need to upgrade my widget and see if I can have better activity reports from them.