I "Follow" Thomas and Dividend Sensei. I "subscribed" to DS for quite a while, until earlier this year. While I do keep a portion of my investments focused on dividend income (as an old codger like me should), I found that he focused mostly on the types of things I typically do not invest in.
For biotech I do subscribe to Jonathon Faison's "ROTY Biotech Community" on Seeking Alpha, and "Follow" a few other authors as well. Faison has changed the format and content a few times, and I do not like it as much as in the past. At times there has been a very active discussion board, and they had a members recommendation list that was always updated with commentary. It was a good source for biotech ideas to research. I often enter a ticker on my phantom portfolio on Seeking Alpha to receive any and all commentary about it, regardless of author. In the past I subscribed to a biotech forum run by Brett Jensen, but dropped it quite a while back. I'm not sure he still has it.
I use Baker Bros. investment list as a source of ideas, too.