@Caroline,
I don't think that the majority of people on philosophy forum are or have studied philosophy on an academic level. But that does not mean anything bad though, because as long as you have a desire to learn philosophy you have some definite merit. One thing I have noticed though is that there is a great deal of resistance to academic philosophy here aside from the occasional mention of some 'ism or name drop. But I think that is very refreshing and very exciting about the forum, where people are just starting out and this is all new information to them.
On Annette Baier, I honestly never thought to look her up on Wikipedia. I knew she was big into David Hume, but apparently that's her prima forte as far as the entry is concerned. I never read the article that you mention, but I would imagine it pertains not as much to the general conception of justice but to justice within the feminist framework. There is a drastically different conception there. I wouldn't call Baier a radical feminist though, but I have understood Baier to be a very insightful feminist very close to other second wave feminists (active 1960's-1980's) like Betty Friedan and Simone de Beauvoir.
Also, if you are interested in her or for anything else philosophy, go onto JSTOR. JSTOR is a online collection of articles, books, etc. for a wide degree of disciplines from Philosophy and History to economics and Science. However, the subscription is not cheap for individuals. If you are in college, you probably have a subscription through the school and you can log on very easily. If you are not in college, I believe you can use your local public library to access the database. If they don't have it, ask for the subscription and I think they will get it. Going through school, I used this database extensively and if you are just getting into philosophy, there is no better place to start than this database because you not only get access to primary philosophy journals and major articles (which independently cost a lot of money to subscribe to), but also book reviews and so on that give you a very good cliff-notes version of major works.