hello
i don't know if you have read recently in the papers about globespan's cash flow problems just now and how they have recieved new money from a major investor. administrators were nearly called in on friday of last week.
http://www.google.co.uk/search?hl=en&q=flyglobespan+cash+help&meta=&aq=f&oq=
the cash flow problem seems to be with the airlines credit card proccesing company GSM who have delayed payments to flyglobespan.
there are lots of comments at
http://www.airliners.net/aviation-forums/general_aviation/read.main/4609533/
you can make your own judgement on whether it's safe or not to book with them by viewing the links above.
regards
jim