You really ask a big question, should we use an assortment of free online tools (messenger, wiki, blog, survey) that might be independently easier to use than Moodle, or should we strive for a single tool that has them all? The single tool probably has more bugs and might not be as good as each tool is independently. However, as you add more and more accounts, passwords, and urls you start to confuse the user. Also integration between various systems allows for synergy (for example, with Moodle I can message all of the students who have not completed an activity). I am tempted by the look of edublogs and pbwiki, but I don't want to have my students go all over the place (because they will miss something).
As for Moodle bugs:
I have used a cheap hosting service siteground.com for a year. They are cheap ($72/year) and the Moodle install has worked well. Sometimes it is slow, but it never breaks.
My school is now going to host Moodle and we have had problems because we don't have a lot of experience and we made some mistakes.
Finally, my thoughts are with the people of Burma and I am horrified by the oppressive regime. Keep on educating!