Bio-terrorist Tactics / Strategy
Where to start:  I like to start in the hottest area so I can infect as many cities that are already infected with another color as soon as possible.  This way you get the infection deck working for you when a city infected with purple is drawn it's a double whammy.  I have found that to be the best tactic for exhausting the purple cube supply quickly.  The beauty is if they concentrate on fighting your purple disease the other ones inevitably bite them in the behind.

Should I avoid drawing and discarding:  So far I draw often but rarely keep a big hand.  I do this because I want to be able to infect remotely as often as possible.  I generally play to exhaust the purple cubes asap(which has been unstoppable so far).  The exception is when I'm trying to destroy a research facility I might draw often to obtain that color.  Few things are more satisfying in this game than sabotaging a research facility the turn right before they plan on curing there.  Drawing as often as I do is making the infection discard pile larger and therefore decreasing the risk of outbreak post epidemic, however, I find it worth it when infect cities are drawn that already contain a purple cube.  It starts snowballing fast if you are consistently infecting locally and remotely.    

Another strategy I've contemplated is sitting far off from any other infected cities, continually infecting one city till it outbreaks, and daring the good guys to come after you.  This would avoid drawing cards and keep the infection pile small so as to maximize the chance of outbreak.

Should I worry about being captured:  The only time I really worry about this is when I'm intent on sabotaging a research facility and need a specific card I'm carrying.  Other than that I actually enjoy moving into a city with a player in it and infecting locally.  Make them use an action capturing you.  I do feel like the ease of escape is an imbalance in the game.

How do the other roles affect tactics:  The operation expert does affect my strategy when it comes to sabotage.  It's still worth it often times if his turn is far away and it delays a cure.  The other major one I see is the quarantine specialist.  She could really hamper the bt's infecting ability resulting in more of the cat and mouse game.  If the medic is in the mix I try and spread out the purple cubes as much as possible.  If they are concentrated it can be much easier for the medic to eradicate the disease, ending the game for the bt, especially if the dispatcher is in the game and moves the medic on his turn after the cure has been found.

Ultimately even if you have poor strategy as the bt it still makes the game near impossible for the good guys, in my opinion.

Has anyone been able to win a game against the bio-terrorist?  I played a 3 player game, 2 good guys and 1 bio terrorist, and the bio terrorist was not very good at all strategy wise.  Still, it was pretty much impossible to win.

We played another game last night with only 3 epidemic cards, 3 good guys, and me as the bio-terrorist.  The game was over relatively fast as I was able to spread my cubes out so much that they ran out of purple cubes thus ending the game.  

We have yet to try hand-picking the roles to assemble the anti bio-terrorist dream team.  But aside from that, I frankly don't see how victory is possible playing against a competent bio-terrorist.  Has anyone out there beat him?